An XNA 4.0 program calls both Update() and Draw() methods at regular intervals.
What is the default frame rate at which the Update() method is called when the target
platform is Windows PC?

A.
30 frames per second

B.
40 frames per second

C.
60 frames per second

D.
Unlimited

Explanation:
http://msdn.microsoft.com/enus/library/microsoft.xna.framework.game.targetelapsedtime.aspx