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: Surgery
All are the characteristics of cellulitis, EXCEPT 
Select and explain. 
A. Acute onset, B. Doughy to indurated consistency, C. Caused by aerobic bacteria, D. Well circumscribed
D: Well circumscribed
Answer: D: Well circumscribed 
Explanation: None