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: Surgery
In pneumothorax due to blunt injury, treatment of choice is - 
Select and explain. 
A. Observation, B. Pneumonectomy, C. Thoracotomy, D. Intercostal drainage
D: Intercostal drainage
Answer: D: Intercostal drainage 
Explanation: None