Which server is best to use as a web server, considering the security and performance concerns?

Coho Winery wants to increase their web presence and hires you to set up a new web server. Coho already has servers for their business and would like to avoid purchasing a new one.

Which server is best to use as a web server, considering the security and performance concerns?
A . SQL Server
B . File Server
C . Domain Controller
D . Application Server

Answer: C