Some of them would like _____ some tea rather than _____ some coffee.   [ ]

A. to have; to have

B. having; to have

C. to have; have

D. having; having

露天矿台阶高度的确定受那些因素的影响？单斗挖掘机平装车时，对台阶高度的确定有那些要求？