How many subscription does the customer need to purchase to protect their VMs in both public cloud accounts?

A customer is currently running VMs in two public cloud providers. As part of their overall data protection strategy they are interested in adding Dell EMC Cloud Snapshot Manager to their portion.

How many subscription does the customer need to purchase to protect their VMs in both public cloud accounts?
A . One subscription, per year, for the number or capacity of VMs
B . One subscription for the cumulative number of all VMs
C . One subscription for the cumulative capacity of all VMs
D . One subscription per public cloud

Answer: C