If P(A)=0.4P(A) = 0.4P(A)=0.4, P(B)=0.5P(B) = 0.5P(B)=0.5, and P(A∣B)=0.2P(A|B) = 0.2P(A∣B)=0.2, what is P(Ac∣Bc)P(A^c|B^c)P(Ac∣Bc)?
0.50.50.5
0.60.60.6
0.70.70.7
0.80.80.8