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 escalator moves towards the top level at the rate of 11 ft.sec and its length is 140 feet. If a person walks on the moving escalator at the rate of 3 feet per second towards the top level, how much time does he take to cover the entire length.

 Option A: 14 sec

 Option B: 10 sec

 Option C: 12 sec

 Option D: 8 sec

 Option E: 5 sec

Ex Output:
Option B


Ex Input:
Question: If j and k are integers whose product is 400, which of the following statements must be true?

 Option A: n + k > 0

 Option B: n is not equal to k.

 Option C: Either n or k is a multiple of 10.

 Option D: If n is even, then k is odd.

 Option E: If j is odd, then k is even.

Ex Output:
Option E


Ex Input:
Question: if length of rectangle is increased by 10%, and breadth is decreased by 10%.what will it effect on area of rectangle?

 Option A: it will have no effect

 Option B: 1% increase

 Option C: 1% decrease

 Option D: 2% increase

 Option E: 2% decrease

Ex Output:

Option C