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
Morphologic stage of the tooth development is determined by: 
Select and explain. 
A. The connective tissue of the tooth germ., B. Epithelial part of the tooth germ., C. Both., D. None.
B: Epithelial part of the tooth germ.
Answer: B: Epithelial part of the tooth germ. 
Explanation: Morphologic stage of tooth development: 
Is determined by the epithelial part of the tooth germ, i.e. Enamel organ.