In the FusionCompute system, which of the following descriptions is incorrect?

In the FusionCompute system, which of the following descriptions is incorrect?
A . If it is bound to a USB device, the virtual machine cannot be migrated to another host.
B . Virtual machine export is a kind of virtual machine hot migration.
C . If the " Bind with selected host " option is not checked, the virtual machine will not be able to add pass-through devices.
D . Support the migration of virtual machines across clusters.

Answer: B