This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Surgery
[{'content': '&;Gas&; in the tissue should be differenciates with \nSelect and explain. \nA. Pseudomyxoma peritonei, B. Pseudomonas infection, C. Clostridium nouyi, D. Non clostridial infection', 'role': 'user'}, {'content': 'Answer: C \nExplanation: .*clostridial organisms can cause Extensive necrosis of muscle with production of gas (hydrogen sulphide; nitrogen; carbon dioxide) which stains the muscle brown or black. * Usually muscle is involved from origin to inseion. * Often may extend into thoracic and abdominal muscles. * When it affects the liver it causes necrosis with frothy blood--foaming liver, is characteristic..Non clostridial gas producing organisms like coliforms can also cause gas .gangrene. ref:SRB&;S manual of surgery,ed 3,pg no 45', 'role': 'assistant'}]