If P(A)=0.5,P(B)=0.4P(A) = 0.5, P(B) = 0.4P(A)=0.5,P(B)=0.4, and A,BA, BA,B are disjoint, what is P(Ac∣Bc)P(A^c | B^c)P(Ac∣Bc)?
0.167
0.2
0.833
0.5