You are implementing an ASP.NET application that includes a page named TestPage.aspx. TestPage.aspx uses a master page named TestMaster.master. You add the following code to the TestPage.aspx code-behind file to read a TestMaster.master public property named CityName.
protected void Page_Load(object sender, EventArgs e).
{ string s = Master.CityName;.
} You need to ensure that TestPage.aspx can access the CityName property. What should you do?

A.
Add the following directive to TestPage.aspx.
<%@ MasterType VirtualPath=”~/TestMaster.master” %>

B.
Add the following directive to TestPage.aspx.
<%@ PreviousPageType VirtualPath=”~/TestMaster.master” %>

C.
Set the Strict attribute in the @ Master directive of the TestMaster.master page to true.

D.
Set the Explicit attribute in the @ Master directive of the TestMaster.master page to true.