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: an article with cost price of 180 is sold at 15% profit. what is the selling price?

 Option A: 198

 Option B: 200

 Option C: 204

 Option D: 207

 Option E: 210
Example Output: Option D

Example Input: Question: 5 men are equal to as many women as are equal to 8 boys. All of them earn Rs.210 only. Menâ€™s wages are?

 Option A: 6Rs

 Option B: 2Rs

 Option C: 4Rs

 Option D: 9Rs

 Option E: 14Rs
Example Output: Option E

Example Input: Question: A can do a certain job in 20 days. B is 60% more efficient than A. How many days does B alone take to do the same job?

 Option A: 7 1/2 days

 Option B: 8 days

 Option C: 12 1/2 days

 Option D: 9 days

 Option E: None of them
Example Output:
Option C