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: An article is bought for Rs.675 and sold for Rs.1215, find the gain percent?

Option A: 33 1/9%

Option B: 33 8/3%

Option C: 33 1/3%

Option D: 33 2/3%

Option E: 80%

Ex Output:
Option E

Ex Input:
Question: If x, y, and z are positive integers such that x is a factor of y and y is a factor of z, which of the following is NOT necessarily an integer?

Option A: (x + y

Option B: (y + z

Option C: yz/x

Option D: (2y + 3z

Option E: (xy + z

Ex Output:
Option A

Ex Input:
Question: P and Q started a business investing Rs 10000 and Rs 15000 resp. In what ratio the profit earned after 2 years be divided between P and Q respectively.

Option A: 2:7

Option B: 2:6

Option C: 17:6

Option D: 2:3

Option E: 7:8

Ex Output:
Option D