This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Upper limb- bones and muscles(proximal) and scapular movement, Subject name: Anatomy
[{'content': 'Trapezius is attached to all structures EXCEPT: \nSelect and explain. \nA. First rib, B. Clavicle, C. Scapula, D. Occiput', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Origin: Occipital bone, ligamentum nuchae, spinous processes of seventh cervical and all thoracic veebrae Inseion: Clavicle, acromion, spine of scapula', 'role': 'assistant'}]