If three groups could be formed using the given figures only once, these groups would be

A

(2, 9, 6), (3, 4, 7) and (1, 5, 8)

B

(1, 9, 6), (3, 5, 7) and (2, 4, 8)

C

(1, 9, 4), (3, 4, 6) and (2, 5, 8)

D

(1, 9, 6), (3, 4, 7) and (2, 5, 8)