You have a SharePoint Server 2010 Service Pack 1 (SP1) server farm. The farm contains 10 front-end
Web servers that have the query server role installed.
You plan to index 15 million items.
You need to recommend a solution to decrease the relevance of search results that are indexed from
a specific site.
What should you include in the recommendation?

A.
crawler impact rules

B.
authoritative pages

C.
server name mappings

D.
crawl rules