This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neuroanatomy, Subject name: Anatomy
[{'content': 'The arrow marked structure is which part of corpus callosum: \nSelect and explain. \nA. Rostrum, B. Genu, C. Body, D. Splenium', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. D. SpleniumThe arrow marked structure is splenium of corpus callosum.', 'role': 'assistant'}]