Shall I start from the very beginning?No,_____you stopped last time.

题目

Shall I start from the very beginning?No,_____you stopped last time.
有选项：A since when B from what C fromwhere D since which 给一个具体的解释~
我也觉得是c，可是答案是B

答案

B
from what ,what=the thing that,代替你上次中断的内容,