Refer to the exhibit.

An operator is trying to log into Cisco VSM, however the login screen does not allow a change to
the username (field is greyed out).
What is causing this behavior?

A.
The operator is trying to log in on a workstation using an unsupported web browser, which
allows only the local administrator to log in.

B.
The VSM system has just been rebooted and the user database has not been loaded yet.
Refreshing the web page helps.

C.
The system is running low on resources and the access is temporarily limited to admin
personnel only.

D.
The operator is trying to log into Cisco VSMC instead of Cisco VSOM.