— When could you have a meal with me?

— I'd like to go _______ it is convenient to you.     

A．whichever

B．whenever

C．whatever

D．wherever

直肠癌根治性手术范围为( )

A．足够的两端肠段

B．全部癌肿

C．相关的肠系膜和淋巴结

D．子宫 * * 等受累器官

E．肛门