Let AAA and BBB be events such that P(A)=0.4P(A) = 0.4P(A)=0.4, P(B)=0.5P(B) = 0.5P(B)=0.5, and P(A∪B)=0.7P(A \cup B) = 0.7P(A∪B)=0.7. Find P(Ac∣Bc)P(A^c | B^c)P(Ac∣Bc).
0.3
0.4
0.6
0.75