If P(A)=0.5,P(B)=0.5,P(A∩B)=0.2P(A)=0.5, P(B)=0.5, P(A \cap B)=0.2P(A)=0.5,P(B)=0.5,P(A∩B)=0.2, what is P(Ac∣B)P(A^c | B)P(Ac∣B)?
0.3
0.4
0.6
0.5