DIRECTIONS (96–100): Pick out the most effective word to make the sentence meaningfully complete
We are familiar with the ___________ ‘A book should not be judged by its cover’.

If A + B means A is the mother of B; A - B means A is the brother of B; A % B means A is the father of B, and A \(\times\) B means A is the sister of B, which of the following shows that P is the maternal uncle of Q?