Interstitials Refer To

Interstitials refer to:

A) the intermediary entity that runs an ad network, lining up customers, displaying ads, and collecting revenue.
B) graphical advertising, as opposed to text ads.
C) ads that run before a user arrives at their intended destination in a website or app.
D) cost-per-action programs, where sponsors pay referring Web sites part of the revenue earned from referrals.
E) Web sites that are displayed when users clicks on advertisements.