The man ____ of killing his family members was reported to have been taken to the police station

A．being suspected

B．suspecting

C．suspected

D．to be suspected

三段不可伸长的细绳OA、OB、OC能承受的最大拉力相同，它们共同悬挂一重物，如图所示，其中OB是水平的，A端、B端固定。若逐渐增加C端所挂物体的质量，则最先断的绳是（）

A.可能是OB，也可能是OC

B.OB

C.OC

D.OA