Task: Question Answering
Input (English): Question: A works twice as fast as B. If B can complete a work in 12 days independently, the number of days in which A and B can together finish the work in :

 Option A: 4 days

 Option B: 6 days

 Option C: 8 days

 Option D: 18 days

 Option E: 28 days
Output (English): Option A