$9-$ The $192\mathrm{.}168\mathrm{.}1\mathrm{.}0$ network has been subnetted using VLSM and all the subnets are contiguous. Router D is the border router leading to another group of networks, and it advertises $192\mathrm{.}168\mathrm{.}1\mathrm{.}0/24$ to Router E$.$ All routers in the system are running RIP v$2.$ A packet addressed to $192\mathrm{.}168\mathrm{.}1\mathrm{.}2$ arrives at Router E$.$ What will happen?

a$)$ Router E will drop the packet because it does not have a route to the required subnet.

b$)$ Router E will send the packet on the summary route to Router D and Router D will then forward the packet on to the right subnet.

c$)$ Router E will send the packet on its default route to Router D and Router D will then forward the packet on to the right subnet.

d$)$ Router E will send the packet to Router D but router D will drop the packet.