Task: Question Answering
Input (English): Question: A and B complete a work in 8 days. A alone can do it in 16 days. If both together can do the work in how many days?

 Option A: 3.75 days

 Option B: 3.78 days

 Option C: 5.3 days

 Option D: 3.15 days

 Option E: 2.75 days
Output (English): Option C