Direction: Study the following information carefully and answer the given questions.
P # Q means P is the father of Q.
P + Q means P is the sister of Q.
P - Q means P is the husband of Q.
P * Q means P is the mother of Q.
If E # A + I - O, how O related to A?
1
Sister
2
Mother
3
Sister-in-law
4
Mother-in-law