The correct option is C B and F
Given, A, B, C, D, E and F are six members of Mehta's family and there are two married couples in it.
The given data can be summarized as:
A - Teacher - Female
B - Engineer - Male - Father of E. Also, B is son of D.
C - Student - Grandchild of F
D - Housewife - Female - Paternal grandmother of E
E - Student - child of B and grandchild of E
F - Doctor - Male - Paternal Grandfather of C
Clearly, according to the given option B and F are the only males.