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 college has 15 staff for every 700 students, then what is the number of staff for 1400 students?

 Option A: 30

 Option B: 14

 Option C: 12

 Option D: 17

 Option E: 19

Ex Output:
Option A


Ex Input:
Question: A shopkeeper sold an book offering a discount of 5% and earned a profit of 30%. What would have been the percentage of profit earned if no discount was offered?

 Option A: 140

 Option B: 120

 Option C: 130

 Option D: 136.8

 Option E: 150

Ex Output:
Option D


Ex Input:
Question: If c≠d and c·d≠0, which of the following may be true?

 Option A: c.d =0

 Option B: c-d=0

 Option C: c+d=2

 Option D: (c+d

 Option E: c−d=d−c

Ex Output:

Option D