There Are 10,000 People in City A

There are 10,000 people in City A. Forty percent of the people in City A are "young," and 60% of the people are "old." A total of 428 new cases of influenza developed in City A during 2004. Eight cases occurred among "young" people, and 420 occurred among "old" people.
-City B also has a population of 10,000. Unlike City A, 60% of the people in City B are "young," and 40% of the people in City B are "old." A total of 292 new cases of influenza developed in City B during 2004. Twelve cases occurred among "young" people, and 280 occurred among "old" people. State which of the following is TRUE.

A) The overall crude cumulative incidence of influenza in City A is greater than City B.
B) The overall crude cumulative incidence of influenza in City B is greater than City A.
C) The overall crude cumulative incidences of influenza in Cities A and B are identical.