Which approach should you recommend?

You are designing several new custom applications for a SharePoint 2010 farm. One of the current applications
contains a Web Part with code that requires substantial CPU and memory resources. The SharePoint farm
administrator wants to ensure that new applications containing custom code do not degrade the performance of
the Web front-end (WFE) servers when they are deployed to the SharePoint farm.
You need to enable the administrator to perform the following tasks:
To configure the applications to run in isolation mode
.To control the resource usage of custom SharePoint applications by assigning the execution load to specified
servers and perform load-balancing of the WFE servers
.To limit the resources allotted to specific applications without impacting overall farm performance and stability
Your design must meet all these requirements. Which approach should you recommend?

A.
Design sandboxed solutions to deploy on the SharePoint 2010 farm.
Specify that the execution of user code is to run on the same WFE server as the server that received the Web request.

B.
Design sandboxed solutions to deploy on the SharePoint 2010 farm.
Specify that the execution of user code is to run on any available WFE server that is running the User Code Service.

C.
Design farm-scoped solutions and deploy them in the farm.
Ensure that the SharePoint administrator will uninstall solutions if WFE servers are running at or near 100% CPU utilization.

D.
Design user controls, load them into Web Parts, and deploy them as features in the farm.
Ensure that the SharePoint administrator will deactivate these features in the farm if WFE servers are running at or near 100% CPU utilization.