Which change to the corporate Windows 7 client would prevent single sign-on to the infrastructure using the end user's Active Directory account?

Which change to the corporate Windows 7 client would prevent single sign-on to the infrastructure using the end user’s Active Directory account?

Which change to the corporate Windows 7 client would prevent single sign-on to the infrastructure using the end user’s Active Directory account?
A . A Smart Card reader is installed to allow the end user to log on with an X509 certificate issued by the Active Directory Certificate Authority.
B . The workstation has the ‘Interactive login: Do not display last user name’ policy applied and enforced by Group Policy Object (GPO).
C . The native Windows Receiver is removed and end users can access the environment using the HTML Receiver through a web browser.
D . The Windows workstation is joined to a different domain than where the end user account resides, and the two domains are in the same forest.

Answer: C