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: Three number are in the ratio 5:6:7. The sum of its largest and smallest numbers equals the sum of the third number and 48. Find the third number?

 Option A: 87

 Option B: 57

 Option C: 48

 Option D: 26

 Option E: 28

Output: Option C


Input: Consider Input: Question: If the probability of rain on any given day in City X is 50%, what is probability that it rains on exactly 4 days in a 5 day period?

 Option A: 2/5

 Option B: 4/5

 Option C: 3/16

 Option D: 4/32

 Option E: 5/32


Output: Option E