Which aspect of cloud computing makes it very difficult to perform repeat audits over time to track changes and compliance? 

Answer options:

A. Virtualization
B. Multitenancy
C. Resource pooling
D. Dynamic optimization

A

Cloud environments will regularly change virtual machines as patching and versions are changed. Unlike a physical environment, there is little continuity from one period of time to another. It is very unlikely that the same virtual machines would be in use during a repeat audit.