Task: Question Answering
Input (English): Question: Two trains, A and B, started simultaneously from opposite ends of a 75-mile route and traveled toward each other on parallel tracks. Train A, traveling at a constant rate, completed the 75-mile trip in 3 hours; Train B, traveling at a constant rate, completed the 75-mile trip in 2 hours. How many miles had train A traveled when it met train B?

 Option A:  20

 Option B:  22.5

 Option C:  30

 Option D:  37.5

 Option E:  45
Output (English): Option C