You are a help desk technician for your company. All users have Windows XP Professional computers. A user named Richard reports that he cannot access www.southridgevideo.com, an Internet Web site, by using Internet Explorer. Whenever Richard types http://www.southridgevideo.com into the Internet Explorer address bar, he receives the following error message: “Your security settings prohibit the display of unsigned ActiveX Controls.” According to company policy, users should download unsigned ActiveX controls only from Internet Web sites that have been approved by the company’s information security department. You verify that www.southridgevideo.com is listed as an approved Web site. On Richard’s computer, you also verify that Internet Explorer is configured with the default settings. You need to ensure that Richard can access www.southridgevideo.com without receiving an error message. You also want to comply with company policy. You need to configure Richard’s computer. First, you open the Security properties for Internet Explorer on Richard’s computer.  Which two actions should you perform next?（）

• A、Add www.southridgevideo.com to the Trusted Sites list.
• B、Remove www.southridgevideo.com from the Restricted Sites list. 
• C、In the Internet zone settings, enable the Allow unsigned ActiveX controls option. 
• D、Open the Local intranet Sites dialog box and clear the Include all network paths check box. 
• E、Open the Trusted Sites dialog box and clear the Require server verification for all sites in this zone check box.
• F、Open the Intranet Sites dialog box. In Advanced properties, add www.southridgevideo.com to the list of Web sites.