D. As far as FPS games go, the Halo series has always been extremely far to the "Mass Appeal / Noob friendly" end of the spectrum, like the Call of Duty series starting with modern warfare. Not that there's anything wrong with that. It's one of the biggest reasons for its success. Loves me some Halo multiplayer.
This space reserved for future witty comment. Maybe it can be yours!!!! (Probably not).