How is containment an advantage of Virtualization?

Select one:

a$.$

Containment is available in Virtualization since Virtual Machines are free from hacking attacks

b$.$

Containment is available in Virtualization since Virtual Machines are not portable

c$.$

In Virtualization, the workloads associated with physical servers can simply be virtualized on a hypervisor when the contract or lease expires

d$.$

Containment is available in Virtualization since Virtual Machines do not need contract renewal