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
Skin grafting is absolutely C/I in which skin infection? 
Select and explain. 
A. Staphylococus, B. Pseudomonas, C. Streptococus, D. Proteus
C: Streptococus
Answer: C: Streptococus 
Explanation: Ans is 'c' i.e. Streptococcus "The skin graft generally survives when placed over the wounds containing less than 105 organisms per gram of tissue unless the organisms are streptococci, which can rapidly dissolve transplanted skin." - S. Das 3/e, p 142