Question $5(2$ points$)$

In Part $1,$ Step $8,$ you pinged the gateway address of $203\mathrm{.}0\mathrm{.}113\mathrm{.}1.$ When looking at the topology and the table of virtual machines, what does that IP address represent?

a$)$ The Security Onion machine

b$)$ The top internal interface of the pfSense firewall

c$)$ The Ubuntu Linux machine

d$)$ The external interface of the pfSense firewall