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.

Ex Input:
Question: In a bag, there are coins of 25 p, 10 p and 5 p in the ratio of 1 : 2 : 3. If there is
Rs. 30 in all, how many 5 p coins are there?

Option A: 150

Option B: 130

Option C: 120

Option D: 110

Option E: 140

Ex Output:
Option A

Ex Input:
Question: If x < y < 0, which of the following must be true?

Option A: 2xy/3x is a negative integer

Option B: x-y is a positive integer

Option C: (-x

Option D: x/y is a negative integer

Option E: 2x+y is a negative integer

Ex Output:
Option C

Ex Input:
Question: Which of the following must be subtracted from 2^72 so that the resulting integer will be a multiple of 3?

Option A: 5

Option B: 4

Option C: 1

Option D: 3

Option E: 2

Ex Output:
Option C