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
The sho posterior ciliary aeries are about in number: 
Select and explain. 
A. 10, B. 20, C. 30, D. 40
B: 20
Answer: B: 20 
Explanation: Ans. 20