Which two commands would you use to kill all the processes owned by the user smith?

Which two commands would you use to kill all the processes owned by the user smith? (Choose
two.)

A.
pkill -9 -u smith

B.
skill -9 -u smith

C.
pkill -1 -u smith

D.
skill -1 -u smith

E.
pkill -19 -u smith

Explanation: