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 glands are: 
Select and explain. 
A. Merocrine., B. Apocrine., C. Holocrine., D. Endocrine.
A: Merocrine.
Answer: A: Merocrine. 
Explanation: None