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
Shape and size of the teeth are determined by which stage: 
Select and explain. 
A. Initiation., B. Apposition., C. Morphodifferentiation., D. Histodifferentiation.
C: Morphodifferentiation.
Answer: C: Morphodifferentiation. 
Explanation: Morphodifferentiation
The morphologic pattern, or basic form and relative size of the future tooth, is established by morphodifferentiation, that is, by differential growth. Morphodifferentiation therefore is impossible without proliferation.