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': 'In alopecia areata, seen is: \nSelect and explain. \nA. Exclamatory mark hair, B. Scaring, C. Fungal infection, D. Traumatic', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Exclamatory markStumps in alopecia areata form exclamation mark(2 (constriction) just above the skin surface. Exclamation mark hair is pathognomic of alopecia areataQ.', 'role': 'assistant'}]