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: Anatomy
[{'content': 'First commissure to develop ? \nSelect and explain. \nA. Corpus callosum, B. Anterior commissure, C. Hippocampus, D. None of the above', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Anterior commissure", 'role': 'assistant'}]