According to the general equation for conditional probability if p(a^b) =3/10

The correct answer for the question that is being presented above is this one: "A. (3/8)." According to the general equation for conditional probability if P(AupsidedownuB) = (3/10) and P(B)= (2/5), then P(A|B) is 3/8.
Here are the following choices:
A. (3/8)
B. (1/2)
C. (3/4)
D. (1/16)

Ithink the answer is: it is likely.