I didn't hear ___________ becaus

I didn't hear ___________ because there was too much noise where I was sitting.
A、what did he say
B、what he said
C、what was he saying
D、what for him to say
【正确答案】：B
【题目解析】：因为didn’t hear 后是一个宾语从句，必须用陈述语序，只有B是陈述语序，所以选B了。