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
Hypophysis cerebri is supplied by 
Select and explain. 
A. Internal carotid artery., B. External carotid artery., C. Maxillary artery., D. Facial artery.
A: Internal carotid artery.
Answer: A: Internal carotid artery. 
Explanation: None