A and B are two events such that P(A)=0.54,P(B)=0.69 and $P(A\cap B)=0.35$.Find $P(A'\cup B')$

Question

$\begin{array}{1 1}(A)\;0.22\\(B)\;0.12\\(C)\;0.32\\(D)\;0.72\end{array} $