Task: Question Answering
Input (English): Question: A bag contains 4 white, 5 red and 6 blue balls. Three balls are drawn at random from the bag. The probability that all of them are red, is:

 Option A: 3/21

 Option B: 2/91

 Option C: 4/91

 Option D: 8/81

 Option E: 9/72
Output (English): Option B