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
Infective gangrene of the subcutaneous tissue which often occurs in the nape of the neck 
Select and explain. 
A. Boil, B. Furuncle, C. Carbuncle, D. Impetigo
C: Carbuncle
Answer: C: Carbuncle 
Explanation: None