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 Brudevold’s solution was introduced in- 
Select and explain. 
A. 1960, B. 1950, C. 1970, D. 1980
A: 1960
Answer: A: 1960 
Explanation: Acidulated phosphate fluoride was introduced in the 1960's by Brudevold and his co-workers at the Forsyth Dental Center, Boston, Massachusetts.