What is this setting called and what are you defining?

When configuring SmartEvent Initial settings, you must specify a basic topology for SmartEvent to help it calculate traffic direction for events .

What is this setting called and what are you defining?
A . Network, and defining your Class A space
B . Topology, and you are defining the Internal network
C . Internal addresses you are defining the gateways
D . Internal network(s) you are defining your networks

Answer: D