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: 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: The radius of a semi circle is 6.3 cm then its perimeter is?

 Option A: 32.9

 Option B: 32.4

 Option C: 32.2

 Option D: 32.1

 Option E: 32.7
Example Output: Option B

Example Input: Question: If 20% of a = b, then b% of 20 is the same as:

 Option A: None of these

 Option B: 10% of a

 Option C: 4% of a

 Option D: 20% of a

 Option E: 30% of a
Example Output:
Option C