Task: Question Answering
Input (English): Question: With both valves open, the pool will be filled with water in 48 minutes. The first valve alone would fill the pool in 2 hours. If the second valve emits 50 cubic meters of water more than the first every minute, then what is the capacity R of the pool?

 Option A: 9000 cubic meters

 Option B: 10500 cubic meters

 Option C: 11750 cubic meters

 Option D: 12000 cubic meters

 Option E: 12500 cubic meters
Output (English): Option D