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: The wages earned by Robin is 38% more than that earned by Erica. The wages earned by Charles is 60% more than that earned by Erica. How much % is the wages earned by Charles more than that earned by Robin?

 Option A: 23%

 Option B: 27.53%

 Option C: 30%

 Option D: 50%

 Option E: 100%
Example Output: Option B

Example Input: Question: There are 9 executives, including the CEO and CFO, that are asked to form a small team of 5 members. However, the CEO and CFO may not both be assigned to the team. Given this constraint, how many ways are there to form the team?

 Option A: 85

 Option B: 87

 Option C: 89

 Option D: 91

 Option E: 93
Example Output: Option D

Example Input: Question: A train 800 m long is running at a speed of 78 km/hr. If it crosses a tunnel in 1 min, then the length of the tunnel is?

 Option A: 288 m

 Option B: 256 m

 Option C: 500 m

 Option D: 278 m

 Option E: 287 m
Example Output:
Option C