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 a committee of 2 people is to be selected from among 5 married couples so that the committee does not include two people who are married to each other, how many such committees are possible?

 Option A: 20

 Option B: 40

 Option C: 50

 Option D: 80

 Option E: 120

Ex Output:
Option B


Ex Input:
Question: A man rows to a place 48 km distant and come back in 14 hours. He finds that he can row 4 km with the stream in the same time as 3 km against the stream. The rate of the stream is:

 Option A: 2 km/hr

 Option B: 1 km/hr

 Option C: 4 km/hr

 Option D: 6 km/hr

 Option E: 5 km/hr

Ex Output:
Option B


Ex Input:
Question: In racing over a given distance d at uniform speed, A can beat B by 10 meters, B can beat C by 6 meters, and A can beat C by 14 meters. What is the distance d in meters?

 Option A: 30

 Option B: 40

 Option C: 50

 Option D: 60

 Option E: 70

Ex Output:

Option A