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: 10 3/4 + 7 2/17 - 9 1/15=?

 Option A: 7 719/1020

 Option B: 9 817/1020

 Option C: 9 719/1020

 Option D: 8 817/1020

 Option E: None of them

Ex Output:
Option D


Ex Input:
Question: How many pieces of 0.85 metres can be cut from a rod 42.5 metres long?

 Option A: 30

 Option B: 40

 Option C: 50

 Option D: 60

 Option E: 70

Ex Output:
Option C


Ex Input:
Question: A rectangular plot measuring 90 metres by 50 metres is to be enclosed by wire fencing. If the poles of the fence are kept 10 metres apart, how many poles will be needed ?

 Option A: 28

 Option B: 56

 Option C: 57

 Option D: 58

 Option E: None of these

Ex Output:

Option A