You are designing a security strategy for the public Web server. You solution must address the chief security officer’s concerns. What should you do？（）

• A、Install  a Web server certificate on WEB1
• B、Enable Internet Connection Firewalll （ICF） on WEB1
• C、Configure IIS on WEB1 to operate in IIS 5.0 isolation mode
• D、Install and configure the URLScan ISAPI filer on WEB1