ou are an enterprise administrator for Cer-tech .com. The company runs Windows Server 2008 on all theservers on the network. One of the servers， Server01 has the Web Server （IIS） role installed on it. Which of the following commands would you choose to create a virtual directory on the company website www.Cer-tech .com/sl for the Sales department？（）

• A、appcmd add site /name：sl /physicalPath：c：/websites/sl
• B、appcmd set vdir /vdir.name：sl /path：/sl /physicalPath：c：/websites/sl
• C、appcmd add app /app.name： Cer-tech /path：/sl /physicalPath：c：/websites/sl
• D、appcmd add vdir /app.name： Cer-tech /path：/sl /physicalPath：c：/websites/sl
• E、None of the above