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 pathognomonic sign of acute iridocyclitis is: 
Select and explain. 
A. Small pupil, B. Aqueous flare, C. Keratic precipitates, D. All of the above
C: Keratic precipitates
Answer: C: Keratic precipitates 
Explanation: Ans. Keratic precipitates