Bertram Pearlbinder, owner of an apartment building near the campus of Hightower University, is considering the possibility of installing a large-screen color television in the building's recreation room. For each of the following, indicate whether the associated data are primary or secondary:

a. Bertram interviews the current residents of the building to determine whether they would rather have the color television or a pool table.

b. Bertram, while reading Newsweek, notices an article describing the property damage in college dormitories and apartments.

c. One of the tenants tells Bertram that many of the residents are "very excited" about the prospect of getting the big TV.