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': 'Tinea ungum effects \nSelect and explain. \nA. Nail fold, B. Nail plate, C. Joints, D. Inter digital space', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Nail plate', 'role': 'assistant'}]