Which two characteristics apply to VM virtual disk images? $($Choose two.$)$

They are just regular files that can be copied and moved like any other file.

The changes that are made in a VM are not saved between hypervisor restarts.

The images can be replicated on another host system, but only if it is running on the same physical hardware.

Virtual disk images are contained in two files that have a $.$vmdk extension in the datastore.

The virtual images have $.$vmdk and $.$vmdd extensions: one is for data, and the other is for VM configuration.