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: Two pipes A and B can separately fill a cistern in 10 and 15 minutes respectively. A person opens both the pipes together when the cistern should have been was full he finds the waste pipe open. He then closes the waste pipe and in another 4 minutes the cistern was full. In what time can the waste pipe empty the cistern when fill?

 Option A: 7

 Option B: 9

 Option C: 5

 Option D: 4

 Option E: 8

Ex Output:
Option E


Ex Input:
Question: Find the least number by which (59)(36)(17) has to be multiplied to obtain a perfect square?

 Option A: 5

 Option B: 17

 Option C: 85

 Option D: 221

 Option E: 223

Ex Output:
Option C


Ex Input:
Question: Find the amount on Rs.8000 in 9 months at 20% per annum, if the interest being compounded quarterly?

 Option A: 9261

 Option B: 1261

 Option C: 9621

 Option D: 9162

 Option E: 5000

Ex Output:

Option A