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': "Which of the following conditions disappear spontaneously in first year of life? \nSelect and explain. \nA. Port wine stain, B. Naevus flammeus, C. Salmon's patch, D. Strawberry hemangioma", 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]