If 'A + B' means 'A is brother of B', 'A @ B' means 'A is father of B', 'A # B' means 'A is sister of B', ' A $ B' means 'A is the wife of B', 'A * B' means 'A is the mother of B', then which of the following statement is correct for the given expression?

P * Q + R # S + T $ U

I. P is the mother-in-law of U.

II. U is the brother of R.