If R=((1, 1), (3, 1), (2,3), (4,2)), then which of the following represents R2, where R2 is R composite R?

A. ((1, 1), (3, 1), (2, 3), (4,2))

B. ((1,1), (9,1), (4,9). (16,4))

C. ((1,1), (2, 1), (4,3), (3, 1))

D. ((1,3), (3,3), (3,4), (3,2))