Use each of the following figures only once and form three groups. The three groups thus formed are:

A

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

B

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

C

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

D

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