Task: Question Answering
Input (English): Question: A tank contains 10,000 gallons of a solution that is 5 percent sodium chloride by volume. If 2,000 gallons of water evaporate from the tank, the remaining solution will be approximately what percent sodium chloride?

 Option A: 1.25%

 Option B: 3.75%

 Option C: 6.25%

 Option D: 6.67%

 Option E: 11.7%
Output (English): Option C