Task: Question Answering
Input (English): Question: Excluding stoppages, the average speed of a bus is 60 km/hr and including stoppages, the average speed of the bus is 45 km/hr. For how many minutes does the bus stop per hour?

 Option A: 15

 Option B: 88

 Option C: 77

 Option D: 20

 Option E: 99
Output (English): Option A