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: Pathology
Intra-epithelial split is seen in : 
Select and explain. 
A. Epidermolysis bullosa., B. Bullous pemphigoid., C. Pemphigus vulgaris., D. All of the above.
C: Pemphigus vulgaris.
Answer: C: Pemphigus vulgaris. 
Explanation: None