While trying to upgrade AOS in a cluster, a consultant receives a warning message that there are two powered-on VMs that need to be powered off for the upgrade to proceed.
What would cause this warning to be issued?
A . Upgrading a single-node cluster requires the VMs to be shut down.
B . Upgrading a two-node cluster requires the VMs to be shut down.
C . There are not enough resources left in the single-node cluster.
D . There are not enough resources left in the two-node cluster.
Answer: A