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
Which of the following anomalies occur during the initiation and proliferation of tooth development? 
Select and explain. 
A. Amelogenisis imperfecta, B. Dentinogenesis imperfecta, C. Enamel hypoplasia, D. Oligodontia
D: Oligodontia
Answer: D: Oligodontia 
Explanation: Lack of initiation may result in oligodontia or anodontia.
Abnormal initiation may result in supernumerary teeth.