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: Which of the following is greatest?

 Option A: 1/10

 Option B: 1/100

 Option C: 1/1000

 Option D: 1/10^9

 Option E: 1/5
Example Output: Option E

Example Input: Question: The average runs scored by a batsman in 20 matches is 40. In the next 10 matches the batsman scored an average of 20 runs. Find his average in all the 30 matches?

 Option A: 31

 Option B: 46

 Option C: 88

 Option D: 33.33

 Option E: 12
Example Output: Option D

Example Input: Question: If n is a positive integer such that
n!/(n-2)! = 342, find n.

 Option A: 17

 Option B: 18

 Option C: 19

 Option D: 20

 Option E: 21
Example Output:
Option C