Task: Question Answering
Input (English): Question: A solution of X pounds of water and sugar is boiled until 20% of the water content evaporates. Originally w% of sugar was present in the solution. After evaporation, what percentage of the solution is sugar?

 Option A: 100w/(1-w

 Option B: 80w/(1-w

 Option C: 75w/(1-w

 Option D: 100w/(80-0.2w

 Option E: 100w/(80+0.2w
Output (English): Option E