You need to provide the site administrator with the ability to change the out-of- the-box search control to MySearch.ascx

You create a user control named MySearch.ascx. You plan to change the native search control in
SharePoint to MySearch.ascx. You need to provide the site administrator with the ability to
change the out-of- the-box search control to MySearch.ascx. What should you do?

A.
Configure the SearchBox.dwp in the Web Part gallery,

B.
Modify \14\TEMPLATE\FEATURES\SearchWebParts\SearchBox.dwp.

C.
Override the search delegate control by using a Feature.

D.
Modify the <SafeControls> element in the web.config file.