What should customers be aware of if they need to use Safari or reinstall OS X Mountain Lion when their Mac has been started from OS X Recovery?

A.
A valid Apple ID is required to use Safari on OS X Recovery.

B.
An internet connection is required to use Safari and reinstall OS X.

C.
A Mac must have at least 4GB of memory to reinstall OS X Mountain Lion.

D.
They must charge the Mac’s battery to 100% before starting from OS X Recovery.