Grouping of Images - Verbal and Reasoning

Directions to SolveIn each of the following questions, group the given figures into three classes using each figure only once.
Q1:

Group the given figures into three classes using each figure only once.

A 1,5,9 ; 2,7,8 ; 3,4,6

B 1,5,6 ; 4,7,8 ; 2,3,9

C 2,4,9 ; 6,7,8 ; 1,3,5

D 3,7,8 ; 4,5,9 ; 1,2,6

ANS:C - 2,4,9 ; 6,7,8 ; 1,3,5

Explanation: 2, 4, 9 have two similar elements intersecting each other. 6, 7, 8 have two different elements one placed inside the other. 1, 3, 5 have two different elements intersecting each other.