You have a SharePoint site that uses the default search settings.

You create a new Search Center.

You need to ensure that the new Search Center is the default Search Center for the site.

What should you modify?

A.
the AllProperties collection of the site

B.
the AllWebs collection of the site collection

C.
the Cache property of the current HttpContext

D.
the Session property of the current HttpContext

Explanation:
MNEMONIC RULE: “AllProperties of the site”

SPWeb.AllProperties Property
http://msdn.microsoft.com/en-us/library/microsoft.sharepoint.spweb.allproperties.aspx

Bloody Stupid SPWeb properties
http://www.novolocus.com/2010/12/22/stupid-spweb-properties/