Suppose A+B means 'A is the daughter of B'
A÷B means 'A is the mother of B'
AxB means 'A is the son of B'
A-B means 'A is the father of B'
If P+Q-RXS÷T, then how is P related to T?
AP is the wife of T
BP is the sister of T
CT is the grandmother of P
DT is the mother of P