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 are features of wet gangrene except \nSelect and explain. \nA. Spreads faster, B. Line of demarcation, C. Arterial and venous block, D. Not Localised', 'role': 'user'}, {'content': 'Answer: B \nExplanation: In wet gangrene there is no line of demarcation.', 'role': 'assistant'}]