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: When the no.7y86038 is exactly divisible by 11, then the smallest whole no.in place of y?

 Option A: 3

 Option B: 4

 Option C: 6

 Option D: 7

 Option E: 9

Ex Output:
Option A


Ex Input:
Question: A group of hikers is planning a trip that will take them up a mountain using one route and back down using another route. They plan to travel down the mountain at a rate of one and a half times the rate they will use on the way up, but the time each route will take is the same. If they will go up the mountain at a rate of 8 miles per day and it will take them two days, how many miles long is the route down the mountain?

 Option A: 18

 Option B: 20

 Option C: 22

 Option D: 24

 Option E: 25

Ex Output:
Option D


Ex Input:
Question: Two pipes P and Q can fill a cistern in 12 and 15 minutes respectively. Both are opened together, but at the end of 3 minutes the first is turned off. How much longer will the cistern take to fill?

 Option A: 11 1/0

 Option B: 11 1/4

 Option C: 11 1/2

 Option D: 11 1/1

 Option E: 11 1/9

Ex Output:

Option B