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
Dental pulp is derived from 
Select and explain. 
A. Cephalic neural crest cells, B. Mesenchymal cells, C. Ectodermal cells, D. Endodermal cells
A: Cephalic neural crest cells
Answer: A: Cephalic neural crest cells 
Explanation: None