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
Main objective of Oral Health Programme by year 2000 is: 
Select and explain. 
A. Caries free mouth, B. No caries up to 12 yrs of age, C. DMF<3, up to 12 yrs of age, D. None of the above
C: DMF<3, up to 12 yrs of age
Answer: C: DMF<3, up to 12 yrs of age 
Explanation: In 1981, WHO and the FDI World Dental Federation jointly formulated goals for oral health to be achieved by the year 2000.