In a certain code language,
A + B means ‘A is the daughter of B'
A - B means 'A is the wife of B'
A × B means 'A is the brother of B'
A ÷ B means 'A is the father of B'.
Based on the above, if 'P + Q × R - S ÷ T', which of the following is true?
1
P is the daughter of T's Mother's Brother.
2
T is S's Son.
3
Q is the brother of S.
4
P is the sister of T.