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
Which of the following is not found in Odontoblastic layer of the pulp 
Select and explain. 
A. Type 1 collagen, B. Type 3 collagen, C. Phosphoryn, D. Acid Phophatase
B: Type 3 collagen
Answer: B: Type 3 collagen 
Explanation: None