This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacterial Infection of Skin, Subject name: Skin
[{'content': '"Row of tomb stones" appearance is a feature of - \nSelect and explain. \nA. Pemphigus, B. Pemphigoid, C. Irritant dermatitis, D. Herpes', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Pemphigus o Repeat from previous sessions.", 'role': 'assistant'}]