What is incorrect about the snapshot description is

What is incorrect about the snapshot description is
A . A virtual machine can create multiple snapshots. When you use a snapshot to restore a virtual machine, subsequent snapshots become invalid.
B . Snapshots can save both virtual machine settings and virtual machine disk data
C . All virtual machines on a host can only create one memory snapshot at the same time
D . Snapshots can save the state of virtual machine memory

Answer: A