which of the following strings should be appended to the command?

To prevent a command run as root from sending both standard out (stdout) and standard error
(stderr) to any terminal or other file or device, which of the following strings should be appended to
the command?

A.
>/dev/null

B.
>/dev/null 1>&2

C.
>/dev/null 2>&1

D.
1>&2 >/dev/null

E.
2>&1 >/dev/null