This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diseases of orbit, Lids and lacrimal apparatus, Subject name: Ophthalmology
[{'content': 'Ptosis results from trauma to which nerve- \nSelect and explain. \nA. VII, B. VIII, C. III, D. VI', 'role': 'user'}, {'content': 'Answer: C \nExplanation: *Ptosis is due to occulomotor nerve paralysis. Ref: Principles of ophthalmology 4th/e p.1107', 'role': 'assistant'}]