You find that Users are not prompted for authentication when they access their Web servers, even though you have created an HTTP rule via User Authentication. Choose the BEST reason why.
A. You checked the cache password on desktop option in Global Properties.
B. Another rule that accepts HTTP without authentication exists in the Rule Base.
C. You have forgotten to place the User Authentication Rule before the Stealth Rule.
D. Users must use the SecuRemote Client, to use the User Authentication Rule.