Complete com as devidas preposições....

I. The problem stems_the government's lack of action
II. When I asked Jean, she hinted _ the chance of a promotion for me.
III. The salesman was responsible _ the accident.
IV. Please, refrain _ smoking in the lecture lounge.
V. I can't stand the way she is always boasting _ her wealthy parents.

A) of/at/ for/with
B) from/at/for/of/about
C) of/for/in/from/with
D) of/for/in/of/with
E) from/at/for/from/about