Task: Question Answering
Input (English): Question: Mary passed a certain gas station on a highway while traveling west at a constant speed of 50 miles per hour. Then, 15 minutes later, Paul passed the same gas station while traveling west at a constant speed of 80 miles per hour. If both drivers maintained their speeds and both remained on the highway for at least 2 hours, how long after he passed the gas station did Paul catch up with Mary?

 Option A: 35

 Option B: 15

 Option C: 20

 Option D: 25

 Option E: 30
Output (English): Option D