This math question is too difficult. Can you help me      ?

A.work on it          B.work out it         C.work it out         D.work for it


C                   work out意為“解決;算出”,work out的賓語如果是名詞,可以放在中間,也可以放在后面,但是賓語如果是代詞,只能放在中間。


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