Classify each of the following as an example of direct, interactive, and/or mass marketing.
a. A cosmetics firm pays for full-page display ads in a number of top women's magazines.
b. A magazine distributor mails a fold-out flyer advertising its products to the addresses of all individuals it has identified as possibly interested in magazine subscriptions.
c. An online gambling operation arranges for pop-up ads to appear on the computer screen every time a person uses a media player to listen to digital music or play video files, and clicking on the ads directs an individual to its Web gambling site.
d. A car dealership places advertisements in newspapers throughout the region where potential customers reside.