This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cerebrum, Subject name: Anatomy
[{'content': 'Regarding corpus callosum true is: \nSelect and explain. \nA. Connects two cerebral hemispheres, B. Connects cerebellum to cortex, C. Contains only commissural fibres, D. Related to 3rd ventricle anteriorly', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans: a (Connects two cerebral hemispheres) Ref: IB Singh, Neuroanatomy, ed, p.74,85CORPUS CALLOSUMMade up of large no of fibres that connect cerebral hemispheres.Parts:Anterior bend- genuMiddle trunkPosterior enlarged splenium.Relations:Intimately related to lateral ventricleUndersurface related to third ventricle.Fibres: Not strictly commissural, but carry association fibres also.', 'role': 'assistant'}]