If A and B are such events that $P(A)>o$ and $P(B)\neq 1$,then P(A|B) equals

Question

$\begin{array}{1 1}(A)\;1-P(A|B)\quad(B)\;1+P(A|B)\quad(C)\;\frac{1-P(A\cap B)}{P(B')}\quad(D)\;P(A)|P(B)\end{array}$