Select the TWO correct alternatives regarding the kill -9 command:

A.
Its use should be avoided and other alternatives should be tried before it.

B.
Its use can occasionally cause the data loss.

C.
It is possible that zombie processes can be created as a consequence of its use.

D.
It can always be used with no restrictions.

E.
Its frequent use can increase the RAM utilization.

Explanation:
See http://en.wikipedia.org/wiki/SIGKILL