Question

A and B are events, with C being another event with Pr(C) > 0. Then Pr(A ∩ B|C) =
a) 1 - Pr(~A ∪ ~B|C)
b) Pr(A|C) + Pr(B|C) - Pr(A ∩ B|C)
c) Pr(A|C) * Pr(B|C)
d) Pr(A|C) + Pr(B|C)