You create a Web Form that allows users to create a new account. You add a CreateUserWizard control by using the following code segment. You need to ensure that the wizard automatically sends an e-mail message to users when they finish creating their accounts. You add a valid element to the Web.config file. Which code segment should you add to the Page_Load event? （）

• A、Wizard1.RequireEmail = True
• B、Wizard1.Email = "user@address.com"
• C、Wizard1.MailDefinition.From = "registration@mysite.com"
• D、SmtpMail.SmtpServer = "mail.contoso.com"