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
Under the ESI act, sickness benefit is given to a person for a maximum period of how many days out of 365 days: 
Select and explain. 
A. 31 days, B. 61 days, C. 91 days, D. 121 days
C: 91 days
Answer: C: 91 days 
Explanation: Sickness benefit under the ESI act consists of periodical cash payment to an insured person in case of sickness. The benefit is payable for a maximum period of 91 days in any continuous period of 365 days, the daily rate being about 505 of daily wages. Ref: Park 21st edition, page 757. Chapter: Occupational health.