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: Anatomy
[{'content': 'The smallest caranial nerve is the- \nSelect and explain. \nA. Olfactory, B. Oculomotor, C. Trochlear, D. Accessry', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Trochlear', 'role': 'assistant'}]