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 reduction of 20% in the price of salt enables a lady to obtain 25 kgs more for Rs.100, find the original price per kg?

 Option A: 6

 Option B: 1

 Option C: 5

 Option D: 4

 Option E: 7

Output: Option B


Input: Consider Input: Question: There are 36 students in a certain geometry class. If one third of the students are boys and one fourth of the boys are under six feet tall, how many boys in the class are under six feet tall?

 Option A: 3

 Option B: 12

 Option C: 18

 Option D: 24

 Option E: 27

Output: Option A


Input: Consider Input: Question: Pipe A can fill a tank in 8 hours, pipe B in 4 hours and pipe C in 24 hours. If all the pipes are open, in how many hours will the tank be filled?

 Option A: 1.9 hour

 Option B: 2.1 hour

 Option C: 4.7 hour

 Option D: 2.4 hour

 Option E: 3.2 hour


Output: Option D