Task: Question Answering
Input (English): Question: A polling company reports that there is a 20% chance that a certain candidate will win the next election. If the candidate wins, there is a 60% chance that she will sign Bill X and no other bills. If she decides not to sign Bill X, she will sign either Bill Y or Bill Z, chosen randomly. What is the chance that the candidate will sign Bill Z?

 Option A: 10

 Option B: 8

 Option C: 6

 Option D: 4

 Option E: 5
Output (English): Option D