Q9:

A gardener is going to plant 2 red rosebushes and 2 white rosebushes.  If the gardener is to select each of the bushes at random, one at a time, and plant them in a row, what is the probability that the 2 rosebushes in the middle of the row will be the red rosebushes?

A.      1/12

B.      1/6

C.      1/5

D.     1/3

E.      1/2

the answer is B , but I think it is D

c2(1)*2*c2(1)/p4(4)