【单选题】
TheownerofSteele'sGroceryinOsage,Ohio,saved$600monthlyonheatduringthewinterbyputtingallhisrefrigeratoraircompressorstogetherinaninsulatedcompartment,theninstallingtwofansandaductthatcarriedwasteheatfromthecompressorsintothemainpartofthestore.（）
(A)theninstallingtwofansandaductthatcarried
(B)thenheinstallingtwofansandaductthatcarried
(C)thentwofanswereinstalledwithaductthatcarried
(D)installingtwofans,andthencarryingthroughaduct
(E)installingtwofans,andaductcarrying
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根据网考网移动考试中心的统计，该试题：
74%的考友选择了A选项
1%的考友选择了B选项
19%的考友选择了C选项
6%的考友选择了D选项
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