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: How long does a train 110 m long running at the speed of 72 km/hr takes to cross a bridge 132 m length?

 Option A: 12.5

 Option B: 12.1

 Option C: 12.9

 Option D: 12.7

 Option E: 12.2

Ex Output:
Option B


Ex Input:
Question: Calculate the sum of first 60 natural numbers.

 Option A: 1839

 Option B: 2830

 Option C: 1830

 Option D: 1831

 Option E: 1835

Ex Output:
Option C


Ex Input:
Question: If a/x = 3 and a/y = 4, then (x + y) in terms of a

 Option A: a/4

 Option B: 5a/7

 Option C: 7a/12

 Option D: 6a/13

 Option E: 11a/17

Ex Output:

Option C