题目内容：
根据以下材料，回答题ThemakersofEurope'stoiletpaperandotherhouseholdpapergoodsarecontributingtodeforestationbyfailingtoofferconsumersenoughrecycledproducts,conservationistssaidrecently.
"Everydayabout270000treesareeffectivelyflusheddownthetoiletorendupasgarbagearoundtheworld;suchauseoftheforestsisbothwastefulandunnecessary,"saidDuncanPoundof
WWF,formerlyknownastheWorldWildlifeFund.
AccordingtoaWWFstudy,thefivebiggestmanufacturersofdisposablepaperproductsinEuropeareProcterandGamble,SCA,KimberlyClark,MesaTissueandGeorgiaPacific,whichcontrolabout
70percentofEuropeanmarket.Thevastmajorityoftheirproductscontain"alarminglylowlevels"ofrecycledfibers,itsaid.
Thatmeansthat"virginfibers"extractedfromnaturalforestsandtreeplantationsaroundtheworld"endupaswastewithouttheconsumer'sknowledge,"theSwitzerland-basedinternationalconservationgroupsaidinthiscommuniqu6.
"Consumershavenoideathattheymaybethreateningtheworld'sforestswhentheygotothebathroom,"saidPollard,whoheadstheWWFprogramonEuropeanforests.
"Themanufacturesclaimthatretailersmainlywantnon-recycledproductsbecausethatiswhatconsumerschoose."theWWFsaid.
"It'samyththatrecycledtissueproductsarenotofgoodquality."Pollardsaid.
TheEuropeantissuebusinessiswortharound8.5billioneuros(10billiondollars)annuallyandaccountsfor26percentofglobalconsumption.
EachEuropeanusesonaverage13kilosofpaperproductsperyear,theWWFsaid.
TheWWFhasaskedthecompaniestobetterinformconsumersabouthowmuchoftheirhouseholdpapergoodsaremadewithrecycledfibersandtoadvisethemtobuyboundsofrecycledtoilet
paperandtissues.
Whatdoestheunderlinedpart"endupaswastewithouttheconsumer'sknowledge"mean? A．Consumerswaste"virginfibers"becausetheylackknowledge
B．Consumersdon'twaste"virginfibers"withoutknowledge
C．Consumersstoppedusing"virginfibers"aswastebecauseofknowledge
D．Consumerswaste"virginfibers"withoutknowit
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