With so many things mixed up it's hard to ______ what's what. [ ]

A. give out

B. turn out

C. make out

D. take out

砖进场后应进行复验，复验抽样数量为在同一生产厂家同一品种同一强度等级的普通砖10万块、多孔砖5万块、灰砂砖或粉煤灰砖15万块中各抽查1组。