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 a patient with one episode of Spontaneous pneumothorax, Which is advised - 
Select and explain. 
A. Stop diving, B. Stop smoking, C. Stop flying, D. All
D: All
Answer: D: All 
Explanation: Ans. is 'd' i.e., All