Question

PLEASEE HELP ANYONE
If event B is a proper subset of event A, find P(A/B)
A P(A)
B 1
C 0
D P(A)/P(B)

Answer 1

I think B should be your answer 

Answer 2

If B is a subset of event A. find P(A/B), that means A and B are complementary events, then they can't happen at the same time. hence P(A/B) = 0 (answer C)