A cryptographically signed patch provides system administrators with assurance that the patch possesses certain qualities. Which two qualities are assured when a patch signature is verified? (Choose two.)

A.
The patch has a verified origin.

B.
The patch has NOT been modified since it was signed.

C.
The patch was created by a Sun Certified Systems Engineer.

D.
The contents of the patch have NOT been revealed to anyone who does NOT have a Sun service plan.