单项选择题

To force a user to use Ctrl-Alt-Delete to log into the computer， a technician can go to Control Panel then：（）

A.Accessibility options.
B.Security Center.
C.User accounts and the Advanced tab.
D.Windows Firewall.

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To force a user to use Ctrl-Alt-Delete to log into the computer， a technician can go to Control Panel then：（）