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
Eruption date of deciduous maxillary 2nd molar is: 
Select and explain. 
A. 20 months, B. 18 months, C. 24 months, D. 28 months
D: 28 months
Answer: D: 28 months 
Explanation: None