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
The following are indications for performing thoracotomy after blunt injury of the chest, except 
Select and explain. 
A. 1000 ml drainage after placing intercostal tube, B. Continuous bleeding through intercostal tube of more than 200 ml/hour for three or more hours, C. Cardiac tamponade, D. Rib fracture
D: Rib fracture
Answer: D: Rib fracture 
Explanation: Ans. is 'd' i.e. Rib fracture