$3-$ Why is the use of a multicast address for RIP v$2$ routing updates an improvement over the use of a broadcast address?

a$)$ Routers give priority to multicast addressed packets when they are received whereas broadcast receives low priority.

b$)$ It eases the pressure on the limited number of usable IP addresses.

c$)$ Hosts that are not running RIP will discard the packets at layer $2$ instead of processing them as far as layer $4.$

d$)$ It enables the routers to learn about all other routers in the system that are running RIP v$2.$