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: If x is positive and y is negative, which of the following must be true?

 Option A: The product of x and y is positive

 Option B: The sum of x and y is positive

 Option C: The sum of x and y is negative

 Option D: The difference of x and y is positive

 Option E: The sum of x^2 and y^2 is positive

Ex Output:
Option E


Ex Input:
Question: The profits of QRS company rose 50% from March to April, then dropped 20% from April to May, then rose 50% from May to June. What was the percent increase for the whole quarter, from March to June?

 Option A: 15%

 Option B: 32%

 Option C: 40%

 Option D: 62%

 Option E: 80%

Ex Output:
Option E


Ex Input:
Question: A factory has a fixed cost of $42,000 a month, and a cost of $2.5 for every item produced. If the selling price of a single item is $5, what is the number of items must be sold monthly for the factory to cover its cost exactly?

 Option A: 9,000

 Option B: 14,000

 Option C: 16,800

 Option D: 22,500

 Option E: 27,000

Ex Output:

Option C