A Linux server needs to be accessed, but the root password is not available. Which of the following would BEST allow an administrator to regain access and set a...

A Linux server needs to be accessed, but the root password is not available.
Which of the following would BEST allow an administrator to regain access and set a new known password at the same time?

A. Boot into single-user mode and reset the password via the passwd command. B. Boot into single-user mode and reset the password by editing the /etc/passwd file. C. Boot into single-user mode and reset the password by editing the /etc/shadow file. D. Boot into single-user mode and reset the password via the chage command.