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.

Ex Input:
Question: If a man crosses a 600 m long street in 5 minutes. What is his speed?

 Option A: 7 km/hr

 Option B: 7.1 km/hr

 Option C: 7.2 km/hr

 Option D: 8 km/hr

 Option E: 8.5 km/hr

Ex Output:
Option C


Ex Input:
Question: A certain sum earns simple interest of Rs. 800 in 2 years at a certain rate of interest. If the same sum earns compound interest of Rs.900in the same period of 2 years, What must be the rate of interest?

 Option A: 25%

 Option B: 10%

 Option C: 15%

 Option D: 20%

 Option E: 30%

Ex Output:
Option A


Ex Input:
Question: There are 3 numbers A, B and C. If A:B = 3/4, B:C = 4/5, C:D = 5/6, then B:D will be?

 Option A: 1 : 2

 Option B: 3 : 5

 Option C: 2:3

 Option D: 6 : 11

 Option E: 5 : 3

Ex Output:

Option C