'A + B' means 'A is the son of B'.
'A - B' means 'A is the wife of B'.
'A × B' means 'A is the father of B'.
'A ÷ B' means 'A is the sister of B'.
If A + P - Q × R - S, then which of the following statements is NOT correct?
1
A is the brother of wife of S.
2
P is the mother of A.
3
Q is the father of A.
4
A is the son of S.