What Happens When You Press the Fn Along with a Function

Multiple Choice

What happens when you press the Fn along with a function key on a laptop computer?

A) You allow the computer to be placed in one of four power modes, which helps with video troubleshooting.
B) You allow the computer to be placed in diagnostic mode, which is especially useful when troubleshooting video problems.
C) You get additional features depending on the key you press.
D) You refresh the monitor.