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: Rahul went to a shop and bought things worth Rs. 50, out of which 80 Paise went on sales tax on taxable purchases. If the tax rate was 8%, then what was the cost of the tax free items?

 Option A: 21.4

 Option B: 12.4

 Option C: 41.2

 Option D: 39.2

 Option E: 32.9

Output: Option D


Input: Consider Input: Question: Simplify: 250 x 250 - 100 x 100

 Option A: 761200

 Option B: 761400

 Option C: 52500

 Option D: 761500

 Option E: None of them

Output: Option C


Input: Consider Input: Question: The total of the ages of Amar, Akbar and Anthony is 56 years. What was the total of their ages three years ago ?

 Option A: 71

 Option B: 47

 Option C: 66

 Option D: 16

 Option E: 18


Output: Option B