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.

Input: Consider Input: Question: Find the fourth proportion to 2,4,6

Option A: 18

Option B: 12

Option C: 9

Option D: 6

Option E: 8

Output: Option B

Input: Consider Input: Question: An inspector rejects 15% of the meters as defective. How many will he examine to reject 15?

Option A: A

Option B: B

Option C: C

Option D: D

Option E: E

Output: Option A

Input: Consider Input: Question: Carol is Five times Alice's age but only twice as old as Betty. Alice is twelve years younger than Carol. How old is Betty?

Option A: 6

Option B: 9

Option C: 12

Option D: 18

Option E: 24
Output: Option A