This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anatomy
[{'content': 'Not a pa of epithalamus \nSelect and explain. \nA. Pineal body, B. Geniculate body, C. Trigonum habenulae, D. Posterior commisure', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The epithalamus consists of the habenular trigones on each side of the third ventricle, the pineal body (pineal gland or epiphysis cerebri), and the habenular commissure', 'role': 'assistant'}]