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: 8 persons can build a wall 140m long in 42 days. In how many days can 30 persons complete a similar wall 100 m long?

Option A: 12

Option B: 10

Option C: 8

Option D: 6

Option E: 5

Output: Option C

Input: Consider Input: Question: In how many ways, a committee of 5 members can be selected from
6 men and 5 ladies, consisting of 3 men and 2 ladies?

Option A: 100

Option B: 200

Option C: 300

Option D: 400

Option E: 500

Output: Option B

Input: Consider Input: Question: In an election only two candidates contested. A candidate secured 70% of the valid votes and won by a majority of 184 votes. Find the total number of valid votes?

Option A: 430

Option B: 438

Option C: 436

Option D: 434

Option E: 460
Output: Option E