Given P(A)=0.8P(A) = 0.8P(A)=0.8, P(B∣A)=0.5P(B|A) = 0.5P(B∣A)=0.5, and P(B∣Ac)=0.2P(B|A^c) = 0.2P(B∣Ac)=0.2, what is P(B)P(B)P(B)?
0.4
0.44
0.46
0.5