A bag contains 6 red jelly beans, 4 green jelly beans, and 4 blue jelly beans. If we choose a jelly bean, then another jelly bean without putting the first one back in the bag, what is the probability that the first jelly bean will be green and the second will be red? Express your answer as a fraction (x/y).

a) 2/39
b) 1/14
c) 2/7
d) 1/7