题目内容：
根据以下资料，回答题。HereisyourbestchancetotravelaroundtheUKin2012:Morethan200B&Bs（bed&breakfast）acrossEngland,Scotland,WalesandNorthernIrelandareselectedtoofferyouamazingservicesforyourstayattheirlowestprices!Don’tmissit．Justcollectthevouchers（活动券）inourB&BDailyprintedfrom01/04/2012to07/04/2012andbookthestaysforyourtravelfollowingthetermsandconditionsbelow:●Theofferincludesaroomforthenightandabreakfastthenextmorning.
●Theofferisoftwokinds:￡20perroom,valid（有效的）duringstayperiodof02/04/2012—31/05/2012andthenagain01/09/2012—31/10/2012；￡35perroom,pernight,validduringstayperiodof01/06/2012—31/08/2012.
●Theofferisvalidforabasictwinordoubleroomonly.
●ThestaymustbebookeddirectlywiththechosenB&Bsbefore28/04/2012.
●Eachvouchercanonlybeusedbytheholdertobookoneroomforonenight.
●Ifvoucherholdersbookeitherthe￡20or￡35perroompernight,anyadditionalservicessuchaslunch,eveningmealoractivitiesmayrequireanextracharge．Butthesearenotrequiredinordertotakeuptheoffer．PleasecheckdirectlywithyourchosenB&Bstoseewhatextraservicesareavailable.
●Vouchersmustbepresentedonarrival．Ifnovouchersarepresented,theB&Bsmayreserve（保留）therighttochargeatfullpriceforeverynightofstay.
●Vouchersmaynotbeusedtogetherwithanyotheroffer.
●Thevoucherholdersmustpayforthestayinfullatthetimeofbooking．Additional￡10maybepaidtoconfirm（确认）thebookingandwillbereturnedonarrival.
●TheB&Bsreservetherighttorefusevoucherholders’bookingsforpeopleundertheageof18.ThevouchercanbeusedforastayatthechosenB&Bon______. A．09/01/2012
B．04/02/2012
C．01/03/2012
D．28/04/2012
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