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 Alma-Ata declaration on 'primary health care' was made in the year: 
Select and explain. 
A. 1980, B. 1978, C. 1982, D. 1977
B: 1978
Answer: B: 1978 
Explanation: None