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: Social & Preventive Medicine
[{'content': 'The extended sickness benefit is given for: \nSelect and explain. \nA. 309 days, B. 409 days, C. 365 days, D. 490 days', 'role': 'user'}, {'content': 'Answer: A \nExplanation: 309 days', 'role': 'assistant'}]