This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pemphigoid Group, Subject name: Skin
[{'content': 'Intra epidermal Bulla is seen in : \nSelect and explain. \nA. Pemphigoid, B. Pemphigus, C. Dermatitis Herpetiformis, D. Light reaction', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. is \'b\' Pemphigus "Pemphigus causes intraepidermal blistering because of loosening of desm somal links b/w epidermal cells caused by immunological attack- Roxburg, 16/e', 'role': 'assistant'}]