Two events AAA and BBB are such that P(A)=0.5P(A) = 0.5P(A)=0.5, P(B)=0.4P(B) = 0.4P(B)=0.4, and P(A∪B)=0.7P(A \cup B) = 0.7P(A∪B)=0.7. What is P(Ac∣Bc)P(A^c | B^c)P(Ac∣Bc)?
0.3
0.5
0.6
0.75