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 fracture shaft humerus, which of the following complication requires immediate surgery? 
Select and explain. 
A. Compound fracture, B. Nerve injury, C. Brachial aery occlusion, D. Comminuted fracture
C: Brachial aery occlusion
Answer: C: Brachial aery occlusion 
Explanation: C i.e. Brachial aery occulsion The absolute indications for immediate operative management of fracture shaft humerus are - associated vascular injuryQ (eg. branchial aery rupture, occlusion etc) and associated higher grade (not all) open woundsQ