This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Nervous System, Subject name: Pathology
[{'content': 'Most common site of occurrence of Craniopharyngioma is? \nSelect and explain. \nA. Infrasellar, B. Suprasellar, C. Posterior fossa, D. Nasopharyx', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Suprasellar* Location of craniopharyngiomas can bei) Sellar - suprasellar (most cases) - most commonly arising on the pituitary stalk and projecting into the hypothalamus.ii) Infrasellar or intrasellar.iii) Prechiasmic.iv) Retrochiasmic.* Rare locations include extradural and extracranial-nasopharyngeal, posterior fossa or extending down the cervical spine.", 'role': 'assistant'}]