This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General surgery, Subject name: Surgery
In a surgical patient, the causes of non-surgical infection are all except 
Select and explain. 
A. Lower respiratory tract infection, B. Wound infection, C. Clostridium difficile diarrhea, D. UTI
B: Wound infection
Answer: B: Wound infection 
Explanation: Hospital acquired Infection (HAI) Infection that follows surgery or admission to hospital Common HAI are 1. Respiratory infections(including ventilator associated pneumonia) 10-15% 2. UTI(mostly related to urinary catheters) 30-40%(MC) 3.Bacteraemia (mostly related to indwelling vascular catheters) 10-15% Surgical site infections 15-20%(2nd most common) Antibiotic associated diarrhea, caused by clostridium difficle 5-10% Ref: Sabiston 20th edition Pgno :322-323