Microsoft's Xbox Operating System Provides Xbox Programmers with a Set

Multiple Choice

Microsoft's Xbox operating system provides Xbox programmers with a set of common standards to use to access controllers, the Kinect motion sensor, play sounds, draw graphics, save files, and more. Without this, games would:

A) be more reliable.
B) be a lot easier to write.
C) cost more.
D) look same.
E) not be restricted to just Microsoft's platforms.