DRDO Multi tasking staff Model paper 1

As we can see in option (N % F @ D $ H) and (N % F @ D % H), the gender of H is unknown so we can easily eliminate these options.
Now to check which option is true we need to draw the family tree for the rest of the options.
Let us first decodethe given symbols and then draw a family tree.

A is
Symbol	$	#	@	%
Meaning	Mother	Father	Husband	Daughter
Of B

Now draw family tree using the following notations:
1) H # R $ D $ N, means H is father of R, R is mother of D and D is mother of N.

Clearly H is not the brother of N.
2) N % F @ D H # R, means N is daughter of F, F is husband of D, D is mother of H and H is father of R.

Clearly H is brother of N.
So option N % F @ D $ H # R is correct.