Read the following information to answer the questions.
(i) P # Q mens Q is father of P.
(ii) P *Q means Q is mother of P.
(iii) `P xi Q` menas Q is brother of P.
P $ Q means Q is sister of P.
Which of the following means A is nephew of D?

Options

A. `Dxi C # B xi A`
B. `A xi B #D xi C`
C. Can't be determined
D. None of these

Answer

B

Explanation

Choice 2 is wrong as sex of A is not known. (I backward coding, if there is no sign before A, it means its sex is unknown. )
Choice 1 and 3 are wrong as A must be before D. (In backward coding, a man of later generation must come earlier in the sequence.)