If P(A)=0.4P(A) = 0.4P(A)=0.4 and P(B∣A)=0.5P(B|A) = 0.5P(B∣A)=0.5, what is P(A∩B)P(A \cap B)P(A∩B)?
0.9
0.1
0.2
0.05