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
Epidermolysis Bullosa simplex is because of defect in: 
Select and explain. 
A. Collagen 7, B. Keratin 5 and Keratin 14, C. Laminin, D. BP1 and BP2
B: Keratin 5 and Keratin 14
Answer: B: Keratin 5 and Keratin 14 
Explanation: Epidermolysis Bullosa simplex : defect in K5 and K14
Epidermolysis Bullosa Junctionalis : defect in Laminin
Epidermolysis Bullosa  Dystrophica : defect in collagen 7
Epidermolysis Bullosa Acquisita : absence of collagen 7