问题：

[单选]

You are charged with implementing a secure wireless installation which will provide Internet access to clientdevices but will not allow communications between wireless clients. In addition to implementing PSPF orpeer-to-peer blocking on the wireless side.
Which of the following actions should you perform on the wiredinfrastructure？（）

A . Take no action， you have achieved your goal.
B . Implement a Cisco Secure IPS sensor.
C . Implement a protected port on the access switches.
D . Implement 802.1X on the switch ports.