After removing a VMM domain from an EPG, you discover that the associated virtual port groups remain in the Vmware vCenter configuration. What causes the virtual port groups to persist in the configuration?
A. The MAC addresses that are learned by the ports of the spine switches are incorrect
B. The port groups are being used by a virtual machine network adapter
C. The MAC addresses that are learned by the ports of the leaf switches are incorrect
D. There is a mismatch between the data center name in vCenter and the VMM controller policy