Which of the following is a TRUE statement on service areas?

a. Service areas will be the same for different organizations.
b. Hospitals in rural areas have ill-defined service areas for their particular services.
c. The service areas for public health departments are homogenous within a state, without regard to whether they are metropolitan or rural.
d. Determining the geographic boundaries of the service area may be highly subjective and is usually based on patient histories, the reputation of the organization, and available technology