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.

Example 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
Example Output: Option B

Example Input: Question: A train covers a distance of 12 km in 10 min. If it takes 10 sec to pass a telegraph post, then the length of the train is?

 Option A: 100

 Option B: 110

 Option C: 200

 Option D: 130

 Option E: 140
Example Output: Option C

Example Input: Question: What is the difference between the compound interest on Rs.12000 at 22% p.a. for one year when compounded yearly and half yearly?

 Option A: 399

 Option B: 383

 Option C: 120.2

 Option D: 288.2

 Option E: 145.2
Example Output:
Option E