This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Brain , Subject name: Anatomy
[{'content': 'Brainstem nucleus not derived from the alar plate \nSelect and explain. \nA. Dentate, B. Inferior olivary, C. Hypoglossal, D. Substantia nigra', 'role': 'user'}, {'content': "Answer: C \nExplanation: Hypoglossal nucleus is a pure motor nucleus derived from the anterior basal plate neural tube Posterior alar plate gives sensory (not motor) nuclei. Ref: Gray's39e/p-518", 'role': 'assistant'}]