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
Paradoxical respiration seen in 
Select and explain. 
A. Diaphragm rupture, B. Hemoperitoneum, C. Flail chest, D. Pneumothorax
C: Flail chest
Answer: C: Flail chest 
Explanation: Answer- C. Flail chest