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
The sputum examination under DTP is done when the patient present with – a) Cough of 1–2 wks durationb) Persistent cough of 1–2 wks durationc) Hemoptysisd) Chest paine) Intermittent fever 
Select and explain. 
A. ab, B. bc, C. bd, D. cd
D: cd
Answer: D: cd 
Explanation: Sputum exam. done under DTP if :
Persistent cough of about 3-4 weeks duration.
Continuous fever
Chest pain
Haemoptysis
Unexplained weight loss
Reduced appetite