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: Pathology
All are ‘celsus’ signs of inflammation except:- 
Select and explain. 
A. Cyanosis, B. Pain, C. Swelling, D. Redness
A: Cyanosis
Answer: A: Cyanosis 
Explanation: o Cardinal signs of acute inflammation (celsus' signs): Rubor (redness), tumor (swelling), color (warmth),Dolor (pain).