Which One of the Following Is Not a Key Characteristic

Which one of the following is not a key characteristic of games?

A) Gamers are open to advertising content in games.
B) Brands benefit when they associate with a successful game.
C) Players identify with the brands their characters use,and this increases their brand involvement.
D) Branding within a game's story is an unobtrusive way to share a brand's core message.
E) Marketers cannot measure a game's promotional value.