This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': 'Which one of the following is the management of pancreatic abscess - \nSelect and explain. \nA. Needle aspiration, B. Gastro-cytostomy, C. External drainage, D. Jejuno-cystostomy', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]