Task: Question Answering
Input (English): Question: 20% of an 30% salt solution is replaced with water. From the resulting solution, again 20% is replaced with water. This step is repeated once more. What is the concentration of salt in the final solution obtained

 Option A: 19.58%

 Option B: 15.36%

 Option C: 20%

 Option D: 9.72%

 Option E: 11.64%
Output (English): Option B