Which of the following descriptions about virtual machines is correct? (Multiple choice)

Which of the following descriptions about virtual machines is correct? (Multiple choice)
A . A virtual machine is a complete system running on a physical server. It contains its own virtual CPU, memory, disk box, network card and other virtual hard disk resources.
B . The configuration file of the virtual machine defines the virtual hardware information of the virtual machine
C . The virtual machine mainly includes configuration files and image files
D . During the virtual startup process, the system time of the CVK host where the virtual machine is located will not be synchronized.

Answer: ABC