Task: Question Answering
Input (English): Question: P and Q need 8 days to complete a work. Q and R need 12 days to complete the same work. But P, Q and R together can finish it in 6 days. How many days will be needed if P and R together do it?

 Option A: 3

 Option B: 8

 Option C: 12

 Option D: 4

 Option E: 6
Output (English): Option B