A jar contains 12 blue pens, 7 black pens, and 3 red pens. Marco picks two red pens at random, without replacement.

Which product represents the probability that both of Marco’s choices will be red pens?

A) 3/22 x 2/22

B) 3/22 x 2/21

C) 3/22 x 3/21

D) 3/22 x 3/22