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: Medicine
[{'content': 'Which herniation is the one that leads to brain stem injury- \nSelect and explain. \nA. Cingulate, B. Hippocampal, C. Sub falcine, D. Cerebellar tonsils', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]