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': 'All of the following cranial nerves contain somatic efferent fibres except: \nSelect and explain. \nA. Trochlear, B. Facial, C. Abducens, D. Occulomotor', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Facial nerve contains special branchial efferents, not somatic efferents', 'role': 'assistant'}]