You develop a Web application that contains two master pages. You need to dynamically set the master page when a user views pages in the application. What should you do? （）

• A、Set Page.MasterPageFile in the Page's Page_Init event.
• B、Set Page.MasterPageFile in the Page's OnInit override.
• C、Set Page.MasterPageFile in the Page's Page_Load event.
• D、Set Page.MasterPageFile in the Page's Page_PreInit event.