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: Dental
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: IgG deposits along basement membrane occurs only in bullous pemphigoid, amongst the given options.