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: In what time will a railway train 90 m long moving at the rate of 44 kmph pass a telegraph post on its way?

 Option A: 3

 Option B: 5

 Option C: 4.3

 Option D: 6.5

 Option E: 7.4

Ex Output:
Option E


Ex Input:
Question: A committee of 5 people is to be selected from 7 people. How many different committees are possible?

 Option A: 21

 Option B: 40

 Option C: 56

 Option D: D.168

 Option E: 336

Ex Output:
Option A


Ex Input:
Question: This year, MBB Consulting fired 10% of its employees and left remaining employee salaries unchanged. Sally, a first-year post-MBA consultant, noticed that that the average (arithmetic mean) of employee salaries at MBB was 10% more after the employee headcount reduction than before. The total salary pool allocated to employees after headcount reduction is what percent of that before the headcount reduction?

 Option A: 99%

 Option B: 100.0%

 Option C: 102.8%

 Option D: 104.5%

 Option E: 105.0%

Ex Output:

Option A