Task: Question Answering
Input (English): Question: Two dogsled teams raced across a 700-mile course in Alaska. Team A finished the course in 7 fewer hours than team B. If team A’s average speed was 5 miles per hour greater than that of team B, what was team B’s average speed, in miles per hour?

 Option A: 12

 Option B: 15

 Option C: 18

 Option D: 20

 Option E: 25
Output (English): Option D