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: A is twice as fast as B. If B alone can do a piece of work in 18 days, in what time can A and B together complete the work?

Option A: 10

Option B: 16

Option C: 18

Option D: 6

Option E: 12

Output: Option D

Input: Consider Input: Question: A candidate got 32% of the votes polled and he lost to his rival by 1908 votes. How many votes were cast?

Option A: 5100

Option B: 5200

Option C: 5300

Option D: 5400

Option E: 5500

Output: Option C

Input: Consider Input: Question: What should be the minimun mark up percentage such that after giving the discount of 200/3% ., there will neither a loss nor a profit ?

Option A: 133.3%

Option B: 100%

Option C: neither gain nor loss

Option D: 200%

Option E: 120%
Output: Option C