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 of the following is false about hydatid cyst of liver \nSelect and explain. \nA. MC cause is E. Granulosus, B. Investigation of choice is casoni’s test, C. Albendazole is scolicidal agent, D. PAIR is done if size > 5cm', 'role': 'user'}, {'content': 'Answer: B \nExplanation: IOC of hydatid cyst is serology. Casoni test is not preferred now.', 'role': 'assistant'}]