Which of the following properties of a user account determines whether the user is given administrator privileges?

Which of the following properties of a user account determines whether the user is given
administrator privileges?

A.
Its primary group ID is 0 (zero).

B.
Its GECOS (name) field is set to “System Administrator”

C.
Its user ID is 0 (zero).

D.
Its username is root.

E.
It is listed first in /etc/passwd