What should you implement?

You are developing an ASP.NET MVC application. The application is deployed in a web farm and is
accessed by many users.
The application must handle web server failures gracefully. The servers in the farm must share the
state information.
You need to persist the application state during the session.
What should you implement?

A.
A state server

B.
Cookieless sessions

C.
A web garden on the web servers

D.
An InProc session