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.

Example Input: Question: Two trains, each 100 m long, moving in opposite directions, cross other in 6 sec. If one is moving twice as fast the other, then the speed of the faster train is?

 Option A: 80 km/hr

 Option B: 66 km/hr

 Option C: 60 km/hr

 Option D: 67 km/hr

 Option E: 22 km/hr
Example Output: Option A

Example Input: Question: The average age of students in section A of 100 students is 20 years and the average age of students in section B of 150 students is 30 years. Find the average age of students in both sections taken together?

 Option A: 26 years

 Option B: 30years

 Option C: 15years

 Option D: 25years

 Option E: 20years
Example Output: Option A

Example Input: Question: The larger of two negative consecutive odd integers 5t and 5(t-1) is multiplied by 3 and then added to the smaller of the two original integers. Which of the following represents this operation?

 Option A: 6t-2

 Option B: 8t-2

 Option C: -2

 Option D: 20t-5

 Option E: -2-4t^2
Example Output:
Option D