You work as the IT professional in an international company which is named Wiikigo. You are experiencedin implementing and administering a network operating system. You are specialized in deploying servers,configuring Windows Server 2008 Terminal services and network application services, and configuring aweb services infrastructure. You work in a company named Wiikigo, Ltd. and Windows Server 2008 is runin the company. A Web server named web.wiikigo.com is administered by you. Two Web sites are hostedby the Web server. And they are respectively named www.wiikigo.com and webmail.wiikigo.com. Usersutilize HTTP to get access to both the sites from the Internet. According to the company security policy, the following requirements should be satisfied. You need tomake sure Internet users can get access to the webmail.wiikigo.com site only through Secure HTTP(HTTPS). And then, two folders named Order and History on www.wiikigo.com can only get accessedthrough HTTPS. At last, no security warnings should be accepted by any user when they connect to bothsites. You are required to have SSL certificates added on web.wiikigo.com. And the company security policyrequirements listed above should be met. Which action should be performed to meet the requirements?（）

• A、To meet the requirements，one certificate from the public trusted certification authority should berequested for web.wiikigo.com.
• B、To meet the requirements，separate certificates from the public trusted certification authority should berequested for www.wiikigo.com and webmail.wiikigo.com.
• C、To meet the requirements，a self-signed certificate should be generated for web.wiikigo.com.
• D、To meet the requirements，separate domain certificates should be generated for www.wiikigo.com andwebmail.wiikigo.com.