Task: Question Answering
Input (English): Question: There are 2 available positions and 50 candidates, one half of whom are democrats and another half are republicans. If it was decided that the positions would be filled at random, then what is the probability W that the both positions will be taken by members of just one party?

 Option A: 1/25

 Option B: 12/49

 Option C: 1/4

 Option D: 24/49

 Option E: 1/2
Output (English): Option D