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': 'Frost bite is treated by \nSelect and explain. \nA. Rapid rewarming, B. Slow rewarming, C. IV pentoxyphiline, D. Amputation', 'role': 'user'}, {'content': 'Answer: B \nExplanation: • Frostbite injuries affect the peripheries in cold climates.\n• The initial treatment is with slow rewarming\xa0in a bath at 42 °C.\n• The cold injury produces delayed microvascular damage.\n• Level of damage is difficult to assess.\n• Surgery usually does not play a role in its management, until there is absolute demarcation of the level of injury.', 'role': 'assistant'}]