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
The bottle feeding should be discontinued by the age of: 
Select and explain. 
A. 12 months, B. 8 months, C. 18 months, D. 20 months
A: 12 months
Answer: A: 12 months 
Explanation: Prolonged bottle feeding more than 1 year can lead to ECC.