need to solve these questions ASAP please

ARP and Ping Analysis Using the diagram answer the following questions. You must briefly explain your response you will not receive credit for a "yes" or "No" answer. If A's ARP table is empty and A pings C will D and E see the ARP Request? Why or why Not? If C pings A successfully, will B see the ICMP Request and the ICMP reply? Why or why not? Workstation Cs ARP table is empty and C wants to send an ICMP request to workstation D. What station C ARP for? What does the router do if it does not know workstation D's MAC address? need to know it? How many collision domains exist in this topology and what devices belong to each? How many broadcast domains exist in this topology and what devices belong to each