If P + Q’ means‘P is the son of Q’; ‘P - Q’ means‘P is the daughter of Q’; ‘P x Q’ means‘P is the brother of Q’: ‘P + Q’ means‘P is the sister of Q’. Then, how is A related with E in the given equation?
$$A + B \times C \div D - E$$

A

Maternal grandson

B

Paternal grandson

C

Paternal grandfather

D

Nephew