When I dropped in, Dr Smith _____, so we only had time for a few words.

A．just left

B．was just leaving

C．has just left

D．had just left

甲在开车经过一个弯道时，乙将小传单折成纸飞机仍进车内，不料扔中司机甲的眼睛，甲用手揉了一下，结果失去了对汽车的控制，将路人撞成重伤，对甲的行为应该如何定性( )

A．间接故意

B．过于自信的过失

C．疏忽大意的过失

D．无罪过事件