This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Social & Preventive Medicine
[{'content': 'Extended sickness benefit for TB under ESI ACT is \nSelect and explain. \nA. 91days, B. 1year, C. 2 year, D. 3years', 'role': 'user'}, {'content': 'Answer: C \nExplanation: REF : PARK 21ST ED', 'role': 'assistant'}]