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: Unknown
[{'content': 'Flat topped violaceous papule, thinning of nail. Microscopic finding would be? \nSelect and explain. \nA. Basal cell degeneration, B. Epidermal bulla, C. Acantholysis, D. Prominent necrotic cells', 'role': 'user'}, {'content': 'Answer: A \nExplanation: (Refer: Fitz Patrick’s Dermatology in General Medicine, 8th edition, pg no: 2418)', 'role': 'assistant'}]