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
Amaurosis fugax refers to occlusion of: 
Select and explain. 
A. Middle cerebral aery, B. Branch retinal vein, C. Branch retinal aery, D. Choridal aery
C: Branch retinal aery
Answer: C: Branch retinal aery 
Explanation: Branch retinal aery