Briefing Apple Knowledge

How does OS X Mountain Lion handle third-party, 32-bit …

How does OS X Mountain Lion handle third-party, 32-bit kernel extensions (KEXTs)?

A.
It ignores them.

B.
It prompts the user with an option to convert them to 64-bit.

C.
It moves them to /Library/Extensions/Disabled/.

D.
It runs them in compatibility mode.