ertkiller .com has purchased laptop computers that will be used to connect to a wireless network. You create a laptop organizational unit and create a Group Policy Object （GPO） and configure user profiles by utilizing the names of approved wireless networks. You link the GPO to the laptop organizational unit. The new laptop users complain to you that they cannot connect to a wireless network.  What should you do to enforce the group policy wireless settings to the laptop computers（）

• A、Execute gpupdate/target：computer command at the command prompt on laptop computers
• B、Execute Add a network command and leave the SSID （service set identifier） blank
• C、Execute gpupdate/boot command at the command prompt on laptops computers
• D、Connect each laptop computer to a wired network and log off the laptop computer and then login again.
• E、None of the above