单项选择题

A.virsh snapshot-create 虚拟机1
B.virt-clone -o linux1-n 虚拟机2-f /var/lib/libvirt/images/虚拟机2.qcow2
C.virsh snapshot-create-as 虚拟机1linux1-bak
D.virsh snapshot-list 虚拟机1