How many attacks should the NIDS appliance detect in the SAFE SMR midsize network design midsize network campus module?

How many attacks should the NIDS appliance detect in the SAFE SMR midsize network design
midsize network campus module?

A.
a large amount, due to outside placement of the edge router

B.
a moderate amount, depending on access through the Internet module

C.
very few

D.
a large amount, due to outside placement of the Internet firewall