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': 'Hydrocele is a type of ..... cyst - \nSelect and explain. \nA. Retention, B. Distension, C. Exudation, D. Traumatic', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Exudation", 'role': 'assistant'}]