You need to design a remote access authentication strategy that will allow users in the IT department to remotely connect to the network. Your solution must meet security requirements. What should you do？（）

• A、Install Internet Authentication Services （IAS） on a server in the den.corp.woodgrovebank.com domain. Configure the VPN servers as RADIUS clients
• B、Install Internet Authentication Services （IAS） on a stand-alone server in the Denver extranet. Create local user accounts for the IT personnel on the IAS server. Configure the VPN servers as RADIUS clients
• C、Create a remote access policy on each of the VPN servers. Configure the policy to use the den.corp.woodgrovebank.com to authenticate remote access users. Configure the policy to require L2TP to establish a connection
• D、Create a remote access policy on each of the VPN servers. Create local user accounts for the IT personnel on the VPN servers. Configure the policy to use the VPN servers’ local accounts database to authenticate users. Configure the policy to require L2TP to establish a connection