What is the purpose of the Cisco UCS TCO/ROI Advisor tool?

What is the purpose of the Cisco UCS TCO/ROI Advisor tool?

A.
to design the components of Cisco UCS solution

B.
to compare an existing environment to a Cisco UCS solution from a cost prospective

C.
to measure the current system workloads across various elements of the IT infrastructure

D.
to plan for system capacity optimization through detailed utilization analysis