This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
In RNTCP what is the schedule for sputum examination after beginning the chemotheraphy, in category I patients - 
Select and explain. 
A. 2, 4 and 6 months, B. 1, 2 and 3 months, C. 3, 5 and 6 months, D. 1, 3 and 5 months
A: 2, 4 and 6 months
Answer: A: 2, 4 and 6 months 
Explanation: - the patient taking category I treatment of DOTS should examine sputum at 2 months. - if the sputum is negative fur bacilli , then continuation phase is staed and sputum is examined at 4 and 6 months. Reference : Park's textbook of preventive and social medicine, 23rd edition, pg no:188 <\p>