Which of the following is an example of primary data that would be used by Topps card company to determine popularity of its new hologram baseball card series?
A. Data from sales records kept by exclusive dealers of Topp's hologram series
B. Sales records for baseball cards gathered by the industry's trade council.
C. Input from focus groups that was put together specifically to discuss their perception of popularity of the hologram card series.
D. An article about the hologram cards in a recent issue of Sports Illustrated.