Given P(A)=0.6P(A) = 0.6P(A)=0.6, P(B∣A)=0.4P(B|A) = 0.4P(B∣A)=0.4, and P(B∣Ac)=0.2P(B|A^c) = 0.2P(B∣Ac)=0.2, what is P(B)P(B)P(B) by the law of total probability?
0.32
0.60
0.80
0.20