What are Time Remaining utilization projections based on?

What are Time Remaining utilization projections based on?

A. historical trends

B. future workloads

C. current utilization
D. what-if scenarios

Reference: https://docs.vmware.com/en/vRealize-Operations-Manager/8.0/com.vmware.vcom.user.doc/GUID-8D9F7E29-53E3-4462-9288-8977ED21939D.html