You are charged with implementing a secure wireless installation which will provide internet  access to client devices but will not allow communications between wireless clients. In addition to implementing pspf or peer-to-peer blocking on the wireless side，which of the following actions should you perform on the wired infrastructure？（）

• A、implement a cisco secure ips sensor.
• B、implement 802.1x on the switch ports.
• C、take no action， you have achieved your goal.
• D、implement a protected port on the access switches.