In a certain code language, 'A - B' means 'A is the wife of B', 'A ^ B' means 'A is the sister of B', 'A $ B' means 'A is the father of B', and 'A ! B' means 'A is the brother of B'. How is M related to E if 'M - C ! O ^ E'?

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?