The annual cumulative incidence of a disease is 5x (10^-4). The best explanation of this figure is:

The figure makes no sens

"There were 5 cases of this disease for every 10,000 at-risk people in this population during a year"

"There were 50,000 new cases of this disease in this population in a given year"

There were 5 new cases of this disease for every 10,000 at-risk people in this population during a year"

There were 5 new cases of this disease per every person-year of follow up in this population during one year