This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anatomy
Circulus iridis major is seen at 
Select and explain. 
A. Ciliary body, B. Pupillary margin, C. Collarette, D. Root of iris
D: Root of iris
Answer: D: Root of iris 
Explanation: Anterior ciliary aeries join with 2 long posterior ciliary aeries at root of iris