This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Brain , Subject name: Anatomy
Posterior communicating aery is branch of 
Select and explain. 
A. Internal carotid aery, B. External carotid aery, C. Middle cerebral aery, D. Posterior cerebral aery
A: Internal carotid aery
Answer: A: Internal carotid aery 
Explanation: Posterior communicating aery arises close to the termination of internal carotid aery. Other branches of cerebral pa internal carotid aery are: Ophthalmic aery Anterior cerebral aery Middle cerebral aery Anterior choroidal aery Posterior cerebral aery is a branch of basilar aery. (Ref: Vishram Singh textbook of clinical neuroanatomy 2nd edition, pg- 176)