If P(A∣B)=0.7P(A|B) = 0.7P(A∣B)=0.7 and P(B∣A)=0.3P(B|A) = 0.3P(B∣A)=0.3, what is the ratio P(A)P(B)\frac{P(A)}{P(B)}P(B)P(A)?
7/37/37/3
3/73/73/7
0.210.210.21
1.01.01.0