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: The average of first seven prime numbers which are between 30 and 70 is

 Option A: 35.4

 Option B: 42

 Option C: 44.4

 Option D: 57

 Option E: 67
Example Output: Option C

Example Input: Question: A car traveled 75% of the way from Town A to Town B at an average speed of 75 mph. The car traveled at an average speed of v mph for the remaining part of the trip. The average speed for the entire trip was 50 mph. What is v in mph?

 Option A: 30

 Option B: 35

 Option C: 25

 Option D: 40

 Option E: 45
Example Output: Option C

Example Input: Question: A train running at the speed of 30 km/hr crosses a pole in 24 seconds. What is the length of the train?

 Option A: 200 m

 Option B: 250 m

 Option C: 300 m

 Option D: 350 m

 Option E: 400 m
Example Output:
Option A