Which two statements are true about signal handling in Oracle Linux?

Which two statements are true about signal handling in Oracle Linux?

A.
The kill command may send a termination signal to more than one process at a time.

B.
All signals may be blocked by a process.

C.
A process killed with the default signal always terminates gracefully if it: does not block
the kill request.

D.
The pkill command kills a process by name.

E.
The kill command sends a sigkill (signal 9) by default to the process being killed.