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: None