Your company has a single Active Directory directory service domain with an Enterprise root certification authority (CA). All servers run Windows Server 2003.

All portable client computers run Windows XP SP3 and connect to the network through wireless access points. The wireless network uses 802.1x authentication. You are designing a security plan for the wireless network.

You need to ensure that portable client computers can connect to the wireless network. You issue and install computer certificates on each portable client computer.

What should you do next?

A.
Set the startup type for the WLAN AutoConfig service to Automatic.

B.
Set the startup type for the Network Access Protection Agent service to Automatic.

C.
Install and configure Internet Authentication Service (IAS) on an existing server.

D.
Install and configure the Routing and Remote Access Service (RRAS) role on an existing server.