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
[{'content': 'All of the following statements about Necrotizing fasciitis are true, EXCEPT: \nSelect and explain. \nA. Infection of fascia and subcutaneous tissue, B. Most commonly caused by Group A beta hemolytic streptococci, C. Most common site is perineum followed by trunk and extremities, D. Surgical debridement is Mandatory', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Necrotizing fasciitis is a necrotizing infection of the skin and subcutaneous tissue. It is often polymicrobial in origin, Group A Streptococci is the most common causative organism. This infection tends to occur first on an extremity in an otherwise healthy host who had a history of trauma or has had a recent operative procedure at the site of the infection. The most common site of necrotizing fasciitis is the extremities followed by trunk and perineum. Ref: Emergency Medicine: A Comprehensive Study Guide By Judith E. Tintinall, 7th Edition, Chapter 147', 'role': 'assistant'}]