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
Trabecular (conventional) outflow of aqueous humour accounts for: 
Select and explain. 
A. 90 percent, B. 80 percent, C. 70 percent, D. 60 percent
A: 90 percent
Answer: A: 90 percent 
Explanation: Ans. 90 percent