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
A 20 year old patient comes to casuality with sustained injury to eye with a cricket ball on examination there is no perforation but there is hyphaema. The most likely source of blood 
Select and explain. 
A. Short posterior ciliary vessels, B. Circulus iridis major, C. Circulus iridis minor, D. Ophthalmic artery
B: Circulus iridis major
Answer: B: Circulus iridis major 
Explanation: Cirulus Iridis major seen at root of iris is most common source of hypheama