Instructions: You are given a math word problem and you are supposed to make use of mathematical concepts like probability, combinatorics, linear equations, sequences/series, or simple operators like addition, subtraction, division, or multiplication to answer the given question. Choose the best option from the 5 given options and report that option.
Input: 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:
Option E