In a certain code, ‘A + B’ means A is the father of B, ‘A - B’ means A is the son of B, ‘A @ B’ means A is the daughter of B and ‘A = B’ means A is the mother of B.
If P + Q = R @ T, then how is P related to T?1
Son
2
Husband
3
Brother
4
Father-in-law