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
Salivary pellicle is composed of the following except: 
Select and explain. 
A. Immunoglobulin G, B. Immunoglobulin A, C. Amylase, D. Albumin
D: Albumin
Answer: D: Albumin 
Explanation: None