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
Maxillary primary cuspid enamel completion takes place at: 
Select and explain. 
A. 6 months in utero, B. 6 months after birth, C. 9 months in utero, D. 9 months after birth
D: 9 months after birth
Answer: D: 9 months after birth 
Explanation: None