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 contractor undertakes to built a walls in 50 days. He employs 60 peoples for the same. However after 25 days he finds that only 40% of the work is complete. How many more man need to be employed to complete the work in time?

Option A: 25

Option B: 90

Option C: 35

Option D: 20

Option E: None of these

Output: Option B

Input: Consider Input: Question: Which of the following CANNOT be weighed using a balance scale and these unit weights: 1, 4, 7, and 10

Option A: 13

Option B: 15

Option C: 17

Option D: 19

Option E: 21

Output: Option A

Input: Consider Input: Question: A, B, C, D, E and F are six cities which are collinear in the same order. The distance between any two adjacent cities is equal. A bus starts at A for city F. It takes 25 minutes for the bus to travel from one city to another and stops for 5 minutes at each place. If the bus reaches E at 8:55, then at what time did it reach station B?

Option A: 7:25

Option B: 7:30

Option C: 7:35

Option D: 7:40

Option E: 7:50
Output: Option A