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': 'Scarring alopecia is seen in: \nSelect and explain. \nA. T. capitis, B. Androgenic alopecia, C. Alopecia areata, D. Lichen planus', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Lichen planus', 'role': 'assistant'}]