On a garage sale, a box containing 9 classic music CDs, 10 country music CDs and 3 hard rock CDs was offered with a very good deal. If a buyer chose 5 CDs randomly from the box without replacement, what is the probability that less than three of the chosen CDs were country music?
(a) 0.5685
(b) 0.5940
(c) 0.5639
(d) 0.5984
(e) none of the above