Which of the following is being described when using a single physical server to host multiple logical servers to more effectively utilize hardware resources？（）

A. Tower server
B. Bare metal server
C. Blade server
D. Rack server

A. To display the logical layout this can differ from the physical layout
B. To enhance a user's understanding of the datacenter layout
C. To create a physical map of the datacenter to provide to guests
D. To provide a blueprint for recreating the same server setup for another client