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 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

Output: Option D


Input: Consider Input: Question: Plaudia can choose any two of four different candles and any 8 of 9 different flowers for a centerpiece arrangement. Given these choices, how many candle + flower groupings can she select?

 Option A: 54

 Option B: 72

 Option C: 96

 Option D: 144

 Option E: 432

Output: Option A


Input: Consider Input: Question: 137+276=435 how much is 731+672?

 Option A: 534

 Option B: 1403

 Option C: 1623

 Option D: 1513

 Option E: 1613


Output: Option A