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
Sign of activity in chronic iridocyclitis is: 
Select and explain. 
A. Aqueous cells, B. Aqueous flare, C. Pigmented KPs, D. All of the above
A: Aqueous cells
Answer: A: Aqueous cells 
Explanation: Ans. Aqueous cells