You are implementing an ASP.NET Web site that uses a custom server control named Task. Task is defined
as shown in the following list. 
Class name: Task 
Namespace: DevControls 
Assembly: TestServerControl.dll 
Base class: System.Web.UI.WebControls.WebControl 
You copy TestServerControl.dll to the Web site’s Bin folder. 
You need to allow the Task control to be declaratively used on site pages that do not contain an explicit @
Register directive. 
Which configuration should you add to the web.config file? 
A.
<appSettings>  
<add key=”Dev:Task” value=”DevControls, DevControls.Task”/>  
</appSettings> 
B.
<compilation targetFramework=”4.0″ explicit=”false”>  
<assemblies>  
<add assembly=”TestServerControl” />  
</assemblies>  
</compilation> 
C.
<pages>  
<controls>  
<add assembly=”TestServerControl” namespace=”DevControls” 
tagPrefix=”Dev”/>  
</controls>  
</pages> 
D.
<pages>  
<tagMapping>  
<add tagType=”System.Web.UI.WebControls.WebControl” 
mappedTagType=”DevControls.Task”/>  
</tagMapping>  
</pages>