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': 'A patient has Bullous Lesion; on Tzank smear \nSelect and explain. \nA. Langerhans cells are seen, B. Acontholysis, C. Leucocytosis, D. Absence of melanin pigment', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Acantholysis', 'role': 'assistant'}]