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
A 40 year old male had multiple blisters over the trunk & Extremities. Direct Immuno fluoresce studies showed linear IgG deposits along the Basement membrane, which of the following is the most likely diagnosis. 
Select and explain. 
A. Pemphigus vulgaris, B. Bullous pemphigoid, C. Pemphigus foliaceous, D. Dermatitis herpetiformis
B: Bullous pemphigoid
Answer: B: Bullous pemphigoid 
Explanation: B i.e. Bullous pemphigoid