How many images should you recommend?

Your network contains an Active Directory forest named contoso.com.
You plan to deploy 200 new physical servers during the next 12 months by using Windows
Deployment Services (WDS). You identify four server builds for the 200 servers as shown in
the following table.
You need to recommend the minimum number of images that must be created for the
planned deployment.
How many images should you recommend?

A.
1

B.
2

C.
3

D.
4

Explanation:
http://technet.microsoft.com/en-us/library/hh831764.aspx