Group the given figures into three classes using each figure only once.
A.
1,2,4 ; 3,5,6 ; 7,8,9
B.
1,7,8 ; 3,5,6 ; 2,4,9
C.
1,3,4 ; 2,8,9 ; 5,6,7
D.
1,7,8 ; 2,3,6 ; 4,5,9
Correct answer is B
1, 7, 8 are all undivided geometrical figures.
3, 5, 6 are geometrical figures divided into two parts.
2, 4, 9 are geometrical figures divided into four parts.