Which two statements are true?

Consider the features and capabilities of DTrace in Oracle Linux.
Which two statements are true?

A.
DTrace is available on Oracle Linux only on the z86_64 platform.

B.
DTrace is available on all Linux platforms.

C.
The Linux kernel changes required to support DTrace, and the DTrace kernel module, are available under the GNU GPL license.

D.
DTrace package are part of the standard OL distribution, although they are not installed by default.

E.
DTrace package are available by subscription from the Unbreakable Linux Network (ULN).