You are implementing an ASP.NET Web page. The page includes several controls， but only a GridView requires view state. You set the GridView… You need to ensure that the page will omit unneeded view state. Wich @ Page directive should you use？（）

• A、<% Page EnableViewState=”true” ViewStateMode=”Enabled” _ %>
• B、<% Page EnableViewState=”true” ViewStateMode=”Disabled” _ %>
• C、<% Page EnableViewState=”false” ViewStateMode=”Disabled” _ %>
• D、<% Page EnableViewState=”false” ViewStateMode=”Enabled” _ %>