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: Surgery
Placement of a This tube for lung surgery is best confirmed by 
Select and explain. 
A. EtCO2, B. Airway pressure measurement, C. Clinically by auscultation, D. Bronchoscopy
D: Bronchoscopy
Answer: D: Bronchoscopy 
Explanation: .