An administrator wants to add a web server to an existing multi-tier application consisting of three virtual machines: A web server A database server An application server The web server should be added to the application when the primary web server reaches: 70% vCPU utilization 55% active memory Which option will achieve this result?

A. Create a virtual machine alarm with an action to run a script that starts a new instance of the web server.
B. Create a host cpu and memory alarm with an action to run a script that starts a new instance of the web server.
C. Configure HA application monitoring for the web server and set it to trigger deployment of a new instance of the web server.
D. Configure Fault Tolerance on the virtual machine and leave the secondary machine disabled until needed.

Answer: A. Create a virtual machine alarm with an action to run a script that starts a new instance of the web server.