题目内容：
根据短文，回答题。OnTuesdayAugustllth，1911，ayoungartist，LouisBeraud，arrivedattheLouvreinParistocompleteapaintingoftheSalonCarre．Thiswastheroomwheretheworld’smostfamouspainting，theMonaLisabyLeonardodaVinci，wasondisplay．Tohissurprisetherewasanemptyspacewherethepaintingshouldhavebeen．Atll0’clockthemuseumauthoritiesrealizedthatthepaintinghadbeenstolen．Thenextdayheadlinesallovertheworldannouncedthetheft．ActuallytheLeonardohadbeengoneformorethantwenty-fourhoursbeforeanyonenoticeditwasmissing．ThemuseumwasalwaysclosedonMondaysformaintenance．JustbeforeclosingtimeonSundaythreemenhadenteredthemuseum，wheretheyhadhiddenthemselvesinastoreroom．Theactualtheftwasquickandsimple．EarlythenextmorningPerrugiaremovedthepaintingfromthewallwhiletheotherskeptwatch．Thentheywentoutabackexit．
NothingwasseenorheardofthepaintingfortwoyearswhenPerrugiatriedtosellittoadealerforhalfamillionlire．PerrugiawasarrestedonDecemberl3th．PerrugiaclaimedhehadstolenitasanactofDatriotism，because，hesaid，thepaintinghadbeenlootedfromtheItaliannationbyNapoleon．Perrugiawasimprisonedfor7months．Itseemedthatthecrimeofthecenturyhadbeensolved．
Buthadit?Perrugiawaskeentoclaimallresponsibilityforthetheft，anditwastwentyyearsbeforethewholestorvcameout．InfactPerrugiahadbeenworkingfortwomastercriminals，ValfiernoandChaudron，whowentunpunishedfortheircrime．Theywouldoffertostealafamouspaintingfromagalleryforacrookeddealeroranunscrupulousprivatecollector．Theywouldthenmakeacopyofthepictureand，withthehelpofbribedgalleryattendants，tapethecopytothebackoftheoriginalpainting．Thedealerwouldthenbetakentothegallervandwouldbeinvitedtomakeasecretmarkonthebackofthepainting．Ofcoursethedealerwouldactuallybemarkingthecopy．Valfiernowouldlaterproduceforgednewspapercuttingsannouncingthetheftoftheoriginal，andthenproducethecopy，completewithsecretmarking．Ifthedealerweretoseethepaintingstillinthegallery，hewouldbepersuadedthatitwasacopy，andthathepossessedthegenuineone．
Chaudronthenpaintednotone，butsixcopiesoftheMonaLisa，using400一year-oldwoodpanelsfromantiqueItalianfurniture．Theforgerieswerecarefullyaged，sothatthevarnishwascrackedanddirty．ValfiernocommissionedPerrugiatostealtheoriginal，andtoldhimtohideituntilValfiernocontactedhim．PerrugiawaitedinvaininatinyroominPariswiththepainting，butheardnothingfromhispartnersincrime．TheyhadgonetoNewYork，wherethesixcopieswerealreadyinstore．Theyhadsentthemtherebeforetheoriginalwasstolen．Atthattimeitwasquitecommonforartiststocopyoldmasters，whichwouldbesoldquitehonestlyasimitations，sotherehadbeennoproblemswithUSCustoms．Valfiernowentontosellallsixcopiesfor$300000each．Valfiern0．toldthestorytoajournalistinl914，onconditionthatitwouldnotbepublisheduntilhisdeath．
Doesthestoryendthere?CollectorshaveclaimedthatPerrugiareturnedacopy．ItisalsopossiblethatLeonardomayhavepaintedseveralversionsoftheMonaLisa，ortheymightbecopiesmadebyLeonardo’spupils．Therehasbeenalotofcontroversyandargumentaboutthe450一year-oldpainting，butafterall，maybethat’swhatShe’ssmilingabout．Thepaintingwasprobablystolen__________． A．onthemorningofAugustllth，1911
B．ontheafternoonofAugustllth，1911
C．onAugustlOth，1911
D．onAugust9th，1911
参考答案：
答案解析：