Task: Question Answering
Input (English): Question: A man's speed with the current is 15 km/hr and the speed of the current is 2.5 km/hr. The man's speed against the current is:

 Option A: 8.5 km/hr

 Option B: 9 km/hr

 Option C: 10 km/hr

 Option D: 12.5 km/hr

 Option E: 25km/hr
Output (English): Option C