QUESTION $9$

Which of the following is true about extended IP ACLs?

a$.$ they should be applied to an interface close to the traffic source

b$.$ you can apply multiple outbound ACLs on a single interface

c$.$ the default inverse mask for the source is $0\mathrm{.}0\mathrm{.}0\mathrm{.}0$

d$.$ the $$established$$ keyword is not available except on standard ACLs