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: Microbiology
[{'content': 'Hepatitis A virus can be restrained by: \nSelect and explain. \nA. Boiling over at 120deg C over 1 min, B. Ether, C. Cholroform, D. Iodine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Hepatitis A virus is resistant to inactivation by heat at 60 Deg C for 1 hour, ether and acid at pH 3. It is inactivated by boiling for one minute over 120 Deg C, 1:4000 formaldehyde at 37 deg C for 72 hours, and chlorine 1 ppm for 30 minutes. It is not affected by anionic detergents. It survives prolonged storage at temperature of 4 Deg C or below.', 'role': 'assistant'}]