Marsha the tech has been tasked to support a set of Mac OS X computers. Upon examining the first few, she realizes the core operating system on the machines is two generations out-of-date. Given such...

Marsha the tech has been tasked to support a set of Mac OS X computers. Upon examining the first few, she realizes the core operating system on the machines is two generations out-of-date. Given such as scenario, what should she do?

A. Open System Preferences and select Update from the options.

B. Open System Preferences and select Software Updater from the options.

C. Open System Preferences and select the App Store pane.

D. She needs a physical disc to update the core operating system in Mac OS X machines.