You are planning the search infrastructure for your company.
You need to recommend a search solution to meet the following requirements:
Users must be able to preview the documents returned in search results.
Users must be able to refine search results by using custom properties.

Users must be able to search the content of PDF files.
The solution must be able to index 1 million documents.
The solution must minimize upfront software costs.
What should you include in the recommendation?

A.
Microsoft SharePoint Online

B.
Microsoft FAST Search Server 2010 for SharePoint

C.
Microsoft SharePoint Foundation 2010 Service Pack 1 (SP1)

D.
Microsoft SharePoint Server 2010 Service Pack 1 (SP1)

Explanation:
Preview documents = fast