What is the main advantage of the Oracle Unbreakable Enterprise Kernel compared with the Red Hat compatible kernel?

What is the main advantage of the Oracle Unbreakable Enterprise Kernel compared with
the Red Hat compatible kernel?

A.
It has a lower Mean Time Between Failures.

B.
It provides higher availability for applications by reducing Mean Time to Recovery.

C.
It is more secure and, therefore, more difficult to hack.

D.
It scales better for more CPUS, memory, and Infiniband network connections.