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
Ectomesenchymal cells closer to the outer margin of the enamel organ will differentiate into: 
Select and explain. 
A. Dental papilla., B. Dental follicle., C. Dental sac., D. None.
B: Dental follicle.
Answer: B: Dental follicle. 
Explanation: Ectomesenchymal cells closer to inner margins of enamel organ will differentiate - Dental papilla 
Ectomesenchymal cells closer to outer margins of enamel organ will differentiate - Dental follicle.