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
The primary function of the dental pulp is: 
Select and explain. 
A. Nutritive, B. Production of dentin, C. Production of enamel, D. Vascular supply to the teeth
B: Production of dentin
Answer: B: Production of dentin 
Explanation: None