You wish to kill a process with a PID of 123. Select the command which will allow the process to
“clean up” before exiting.

A.
kill -1 123

B.
kill -9 123

C.
kill -15 123

D.
kill -17 123

Explanation:
To terminate the process we use kill command. But we should know the process ID. In
QUESTION:s PID is specified to 123. Syntax of kill command is: kill signal PID Where -9 is the
powerful signal then other signal which kill the process.