If P(A∣B)=0.3P(A|B) = 0.3P(A∣B)=0.3 and P(B∣A)=0.6P(B|A) = 0.6P(B∣A)=0.6, what is the ratio P(A)/P(B)P(A)/P(B)P(A)/P(B)?
1:2
2:1
1:4
4:1