You are a desktop support technician for your company. You implement a two-factor authentication scheme on the computer that runs Windows Vista. You need to ensure that the two-factor authentication scheme is the only way to log on to the computer. What should you do?

A.
Select the interactive logon: Require smart card option in the local security policy.

B.
Set the Smart Card service startup type to Manual and configure the service to start under the context of your user account.

C.
Set the Secondary logon service startup type to Automatic and configure the service to start under the context of your user account.

D.
Set the Interactive logon: Number of previous logons to cache (in case domain controller is not available) option to 0.