You are the administrator for a SharePoint 2010 farm.
You need to implement an enterprise search technology that meets the following requirements:
Allows users to search people and their expertise.
Crawls content outside the SharePoint.
Provides metadata-driven refinement in the top results.
Provides phonetic searches.
Provides search email alerts.
Which search technology should you use? (Choose the best answer.)

A.
SharePoint Server 2010 Search

B.
FAST Search Server 2010 for SharePoint

C.
Search Server 2010 Express

D.
User Profile Service