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: Ophthalmology
Isolated painful third nerve palsy is a feature of aneurysms of: 
Select and explain. 
A. Posterior communicating aery, B. Anterior communicating aery, C. Veebrobasillary aery, D. Ophthalmic aery
A: Posterior communicating aery
Answer: A: Posterior communicating aery 
Explanation: Ans. Posterior communicating aery