In a certain code language, A ± B means 'A is the wife of B', A * B means 'A is the son of B', A ₹ B means 'A is the father of B', and A # B means 'A is the sister of B'. How is D related to O if 'D * R ± A ₹ C # O'?

M is the brother of N, O is the father of M, P is the brother of Q, and Q is the daughter of N. How is M related to Q?

If 'P + Q' means 'P is the father of Q', 'P × Q' means 'P is the brother of Q', and 'P - Q' means 'P is the mother of Q', then which of the following is true about the expression A × B - C + D?