You are given a math word problem and you are supposed to make use of mathematical concepts like probability, combinatorics, linear equations, sequences/series, or simple operators like addition, subtraction, division, or multiplication to answer the given question. Choose the best option from the 5 given options and report that option.

Example Input: Question: P is three times as fast as Q and working together, they can complete a work in 18 days. In how many days can Q alone complete the work?

 Option A: 24

 Option B: 77

 Option C: 88

 Option D: 55

 Option E: 778
Example Output: Option A

Example Input: Question: The number of arrangements that can be made with the letters of the word COPY so that the vowels occupy the even places?

 Option A: 6

 Option B: 144

 Option C: 777

 Option D: 992

 Option E: 221
Example Output: Option A

Example Input: Question: A and B can finish a work in 16 days while A alone can do the same work in 32 days. In how many days B alone will complete the work?

 Option A: 76 days

 Option B: 48 days

 Option C: 98 days

 Option D: 32 days

 Option E: 22 days
Example Output:
Option D