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: Unknown
Regarding pituitary – false is 
Select and explain. 
A. 2cm in diameter, B. Receives blood supply from circle of Willis, C. Entirely ectodermal in origin, D. Connected to thalamus by infundibulum
D: Connected to thalamus by infundibulum
Answer: D: Connected to thalamus by infundibulum 
Explanation: None