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': "The sensitivty of Casoni's test is - \nSelect and explain. \nA. 50%, B. 60%, C. 75%, D. 90%", 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., 90%", 'role': 'assistant'}]