$A$ and $B$ are two events such that $P(A) = 0.8$,$P(B) = 0.6$,and $P(A \cap B) = 0.5$. Then the value of $P(A/B)$ is:

• A
  $\frac{5}{6}$
• B
  $\frac{5}{8}$
• C
  $\frac{9}{10}$
• D
  None of these