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
Not a pa of epithalamus 
Select and explain. 
A. Pineal body, B. Geniculate body, C. Trigonum habenulae, D. Posterior commisure
B: Geniculate body
Answer: B: Geniculate body 
Explanation: 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