A box contains 2 red marbles, 2 green marbles, and 2 yellow marbles. Carol takes 2 marbles from the box at random; then Claudia takes 2 of the remaining marbles at random; and then Cheryl takes the last two marbles. What is the probability that Cheryl gets 2 marbles of the same color?<spanclass=′latex−bold′>(A)</span>101<spanclass=′latex−bold′>(B)</span>61<spanclass=′latex−bold′>(C)</span>51<spanclass=′latex−bold′>(D)</span>31<spanclass=′latex−bold′>(E)</span>21