Numerator is pa of denominator and always expressed as percentage
C
Numerator is pa of denominator and not expressed as percentage
D
Numerator is not a pa of denominator and always expressed as percentage
High-Yield Explanation
Propoion = a/b X 100. numerator (a) is pa of Denominator (b). always expressed in percentage. Examples:Prevalence of disease, Case fatality Rate are also propoion.