Item $2$: Find out the automatic multicast IP address ranges with $233\mathrm{.}0\mathrm{.}0\mathrm{.}0./8$ if the AS no$,$ is $0$XEC$78.$

Item $3$: Find the multicast IP address range that will be mapped to one multicast MAC address if one of the IP addresses in this range is $238\mathrm{.}25\mathrm{.}10\mathrm{.}0.$

Item $4$: What will be the MAC address with which, these IP multicast addresses will be mapped where the range is $01-00-5e-00-00-00$ through $01-00-5e-7f-ff-ff.$