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
In Enamel maturation during primary phase, initial Influx is abour: 
Select and explain. 
A. 15-20% of total mineral content., B. 25-30% of total mineral content., C. 45-50% of total mineral content., D. 65-75% of total mineral content.
B: 25-30% of total mineral content.
Answer: B: 25-30% of total mineral content. 
Explanation: None