This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vesiculobullous & Erosive Diseases in the Newborn and Infant, Subject name: Skin
[{'content': "Which of the following is a sub-epidermal blistering disorder? \nSelect and explain. \nA. Pemphigus vulgaris, B. Bullous pemphigoid, C. Pemphigus foliaceous, D. Darier's disease", 'role': 'user'}, {'content': "Answer: B \nExplanation: ANSWER: (B) Bullous pemphigoidREF: Rooks dermatology 7th ed p. 41.3-41.19Interapidermal bullaBlister at dermoepidermal junctionGranular layerJunctionalPemphigus foliaceousJunctional EBSubcorneal pustular dermatosisBullous pemphigoidStaphylococcal scalded skin syndrome Bullous impetigoDermolyticSpinous layerEpidermolytic bullosa dystrophicansFamilial benign pemphigusEpidermolytic bullosa aquisticaSuprabasalDermatitis herpetiformisPemphigus vulgarisDarier's diseaseBasal layerErythema multiformeLupus erythematosusLichen planusEBS", 'role': 'assistant'}]