During the race many cars ______ while my new solar car came out first.

A．broke out

B．broke away

C．broke down

D．broke up

转向信号灯故障诊断：闭合应急灯开关时，全车信号灯正常，左右打转向灯开关时，左右灯信号都不亮。甲认为，转向灯电源电路及开关故障，乙认为闪光器到转向灯开关电路故障，你认为（）

A.甲对

B.乙对

C.甲乙都对

D.甲乙都不对