You are designing a data center network that will require the rapid deployment and removal of security features between virtual machines based on triggered traffic flows. The data center will require the ability to scale up and down rapidly according to traffic load, and then release resources when security services are not needed.
In this scenario, which type of security design would fulfill this requirement?

A. a centralized security appliance

B. a container-based security deployment

C. a physical security device connected to each host
D. an all-in-one virtual security device in each host