Events A and B are such that $P (A) = \frac{1}{2} , P(B) = \frac{7}{12}$ and P(not A or not B) = $\frac{1}{4}$ . State whether A and B are independent?

Question

$\begin{array}{1 1} \text{A and B are independent} \\\text{A and B are not independent} \end{array}$