Read the following information to answer these question
(i) A` Delta` B means A is mother of B.
(ii) A©B means A is sister of B.
(iiii) A*B means A is father of B.
(iv) A` beta` B means A is brother of B.
Which of the following means X is uncle of Y?

Options

A. `X beta Z © K Delta J © Y'
B. `X © N Delta A beta gamma`
C. `gamma © N *L © X`
D. None of these

Answer

A

Explanation

Choice 2 and 4 are wrong as they indicate that X is a female because X is followed by © . Generation gap between X and Y in choice 1 is : `0 + 0+ 1 + 0 =1.` So, (1) could be correct. Drawing its family tree, we get:
`{:(X (+) - Z (-) - K(-)),(" "|) ,(" "J(-) - Y):}` Indeed, X is uncle of Y here,