The correct answer is A.
OBJ-4.2: The process of developing, testing, and deploying images brings about the first major security concern with the virtual platform itself. This is the problem of rogue VMs. A rogue VM is one that has been installed without authorization. The uncontrolled deployment of more and more VMs is referred to as VM sprawl. After all, it is a lot easier to add a guest image to a server than it is to plug a new hardware server into the network.