To prevent unauthorized users from accessing virtual machine disk data, such as the administrator view the virtual disk volume after a malicious volume, what kind of virtual machine protection does FusionSphere provide?

To prevent unauthorized users from accessing virtual machine disk data, such as the administrator view the virtual disk volume after a malicious volume, what kind of virtual machine protection does FusionSphere provide?
A . Data access control
B . Residual information protection
C . Disk encryption solutions
D . Data backup

Answer: C