题目内容：
根据以下内容回答题。 Thefridgeisconsiderednecessary．Ithasbeensosincethe1960swhenpackagedfoodlistap-pearedwiththelabel:"Storeintherefrigerator．"
Inmyfridgelessfiftieschildhood,Iwasfedwellandhealthy．Themilkmancameeveryday,thegrocer,thebutcher(肉商),thebaker,andtheice-creammandeliveredtwoorthreetimeseachweek．TheSundaymeatwouldlastuntilWednesdayandsurplus(剩余)breadandmilkbecameallkindsofcakes．Nothingwaswasted,andwewerenevertroubledbyrottenfood．Thirtyyearsonfooddeliverieshaveceased,freshvegetablesarealmostunobtainableinthecountry．
Theinventionofthefridgecontributedcomparativelytittletotheartoffoodpreservation．
Manywell-triedtechniquesalreadyexisted--naturalcooling,drying,smoking,salting,sugaring,bottling．．．
Whatrefrigerationdidpromotewasmarketing--marketinghardwareandelectricity,market-ingsoftdrinks,marketingdeadbodiesofanimalsaroundtheworldinsearchofagoodprice．
Somostoftheworld'sfridgesaretobefound,notinthetropicswheretheymightproveuse-ful,butintherichcountrieswithmildtemperatureswheretheyareclimaticallyalmostunnecessary．
Everywinter,millionsoffridgeshumawaycontinuously,andatvastexpense,busilymaintaininganartificially-cooledspaceinsideanartificially-heatedhouse--whileoutside,natureprovidesthede-siredtemperaturefreeofcharge．
Thefridge'seffectupontheenvironmenthasbeenevident,whileitscontributiontohumanhappinesshasbeennotimportant．Ifyoudon'tbelieveme,tryityourself,investinafoodcabinetandturnoffyourfridgenextwinter．Youmaynoteatthehamburgers,butatleastyou'llgetridofthatterriblehum．
Thestatement"Inmyfridgelessfiftieschildhood,Iwasfedwellandhealthily．"suggeststhat A．theauthorwaswell-fedandhealthyevenwithoutafridgeinhisfifties．
B．theauthorwasnotaccustomedtofddgeseveninhisfifties．
C．therewasnofridgeintheauthor'shomeinthe1950s．
D．thefridgewasinitsearlystageofdevelopmentinthe1950s．
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答案解析：