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: Sum of 19 odd numbers is?

 Option A: 341

 Option B: 351

 Option C: 361

 Option D: 371

 Option E: 381
Example Output: Option C

Example Input: Question: A tank holds x gallons of a saltwater solution that is 20% salt by volume. One Fourth of the water is evaporated, leaving all of the salt. When 5 Gallons of water and 10 gallons of salt are added, the resulting mixture is 33 1/3 % salt by volume. What is the value of x?

 Option A: 37.5

 Option B: 75

 Option C: 100

 Option D: 150

 Option E: 175
Example Output: Option B

Example Input: Question: If x≠4 and (x^2 - 16)/(2y) = (x - 4)/4, then in terms of y, x = ?

 Option A: (y - 8

 Option B: (y - 3

 Option C: y - 3

 Option D: y - 6

 Option E: (y + 6
Example Output:
Option A