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: Radiology
[{'content': "In normal X–ray of shoulder which is'superior most structure – \nSelect and explain. \nA. Greater tubercle, B. Surgical neck of humerus, C. Coracoid process, D. Head of humerus", 'role': 'user'}, {'content': 'Answer: C \nExplanation: From superior to inferior (important structure on X-ray sholder) :- Clavicle : Acromian : Coracoid : Superior margin of humeral head : greater tubercle : anatomical neck : surgical neck.', 'role': 'assistant'}]