In a certain code language,
'A ÷ B means 'A is the wife of B',
'A - B' means 'A is the father of B',
'A × B' means 'B is the mother of A',
'A $ B' means 'A is the sister of B',
'A + B' means B is the daughter of A'.
Based on this information, how is P related to M if 'P ÷ Q - R + S × T $ M'?
1
Sister's husband's mother
2
Husband's mother
3
Mother's sister
4
Sister's husband