This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Brainstem, cerebellum and ventricles, Subject name: Anatomy
[{'content': '"Nucleus ambiguus" is present at \nSelect and explain. \nA. Base of pons, B. Midbrain, at level of superior colliculus, C. Midbrain, at level of inferior colliculus, D. Lateral medulla', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The nucleus ambiguus is found in the lateral medulla; it gives rise to the SVE (Special visceral efferent fibers ) components of cranial nerves IX and X. fig:- crossection at the level of medulla(upper pa)', 'role': 'assistant'}]