The Numerator of Prevalence of a Disease in a Population

The numerator of prevalence of a disease in a population at a particular point of time is:

A) The number of new cases of the disease in the population occurring at the particular point in time
B) The total population at that particular point of time
C) The number of existing cases (new and old) of the disease in the population at that particular point in time
D) The number of cases cured of the disease in the population at a particular point in time