Task: Question Answering
Input (English): Question: A can finish a work in 9 days and B can do the same work in 15 days. B worked for 10 days and left the job. In how many days, A alone can finish the remaining work?

 Option A: 6

 Option B: 3

 Option C: 5.5

 Option D: 7

 Option E: 8
Output (English): Option B