It is really disturbing to me that my once best friend _______ to me recently. Worse still, I don't know

what I have done wrong.    [ ]

A. avoids to talk      

B. escapes talking       

C. stops to talk      

D. avoids talking

一个长方体所有棱长和是180cm，长、宽、高比是3：4：2，求这个长方体的表面积和体积？