Dilan is a network administrator for a large company. On a couple of different occasions, he noticed that users were getting odd IP addresses when attempting to join the corporate network. He found that the development team had created virtual machines that were offering out IP addresses. Which of the following, if enabled, would have prevented this from happening?

a$.$ Mandatory Access Control $($MAC$)$

b$.$ DHCP snooping

c$.$ ARP spoofing

d$.$ RBAC