This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: RNTCP, Subject name: Social & Preventive Medicine
A patient came to a private practitioner and was diagnosed Tuberculosis. Within how many days he has to inform or register to district health officer? 
Select and explain. 
A. 1 day, B. 7 day, C. 30 days, D. 1 year
C: 30 days
Answer: C: 30 days 
Explanation: All stakeholders, both public and private, are required to notify TB cases when patients have been diagnosed or when anti-TB treatment has already been initiated. Repo the cases to the nodal public health authority "at least on monthly basis". "All cases diagnosed/treated since April 7, 2012 may be notified," - states TB notification module of NIKSHAY.