Task: Question Answering
Input (English): Question: A and B are two partially filled buckets of water. If 4 liters are transferred from A to B, then A would contain one-third of the amount of water in B. Alternatively, if 4 liters are transferred from B to A, B would contain one-half of the amount of water in A. Bucket A contains how many liters of water?

 Option A: 44/5

 Option B: 13

 Option C: 17

 Option D: 21

 Option E: 23
Output (English): Option A