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: A and B invests Rs.3000 and Rs.4000 respectively in a business. If A doubles his capital after 6 months. In what ratio should A and B divide that year's profit?

 Option A: 9:6

 Option B: 9:8

 Option C: 9:1

 Option D: 9:9

 Option E: 9:5
Example Output: Option B

Example Input: Question: If 0.5 : x :: 5 : 8, then x is equal to:

 Option A: A

 Option B: B

 Option C: C

 Option D: D

 Option E: E
Example Output: Option E

Example Input: Question: A is thrice as good a workman as B and takes 10 days less to do a piece of work than B takes. B alone can do the whole work in

 Option A: 15days

 Option B: 10days

 Option C: 9days

 Option D: 8days

 Option E: 7days
Example Output:
Option A