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: Skin
[{'content': "Dhobi's itch is: \nSelect and explain. \nA. Tinea corfioris, B. Tinea cruris, C. Tinea barbae, D. Tinea capitis", 'role': 'user'}, {'content': 'Answer: B \nExplanation: B. i.e. Tinea cruris', 'role': 'assistant'}]