How does the switch now control access to the CLI through the console port?

An ArubaOS switch operates at factory default settings. A network administrator enters this command:
Switch (config)# password operator plaintext mysecret
How does the switch now control access to the CLI through the console port?
A. It forces users to enter no username and password operator to gain access to basic mode. Users must then enter password mysecret to reach enable mode.
B. It forces users du enter username operator and password mysecret to gain access to basic mode. Users can then reach enable mode without authenticating.
C. It allows users to access basic mode without logging in, but forces them to enter password mysecret to reach enable mode.
D. It forces users to enter no username and password mysecret to gain access to basic mode. Users can then reach enable mode without authenticating.

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