How many independent subnets and switch ports per subnet can ControlCenter manage when deploying ControlCenter 5.2 FCC Agents?

A.
2-stand-alone subnets and 4096 ports
B.
2-stand-alone subnets and 2048 ports
C.
4-stand-alone subnets and 4096 ports
D.
4-stand-alone subnets and 2048 ports