In the Context of Mobile Marketing Strategies, In-Game Mobile Marketing

In the context of mobile marketing strategies, in-game mobile marketing:

A) requires a user to share his\her location and display business ads relative to the location.
B) requires a gamer to click on search engine ads in order to go to the next level of the game.
C) uses mobile games where the characters in the game promote products for companies.
D) uses mobile ads that appear between loading screens within popular games.