A Technician Is Logged in to a Linux System with a User

Multiple Choice

A technician is logged in to a Linux system with a user account that has been assigned root privileges. Each time the technician attempts to run a specific terminal command, a "Permission denied" message is displayed.   
What is the most likely reason for this message?

A) The software repository is out of date and needs to be updated.
B) The command syntax needs to be verified.
C) The user account is not assigned a password.
D) The command needs to be preceded by sudo.