Which statement is true of an ARP request entering into a switch?

The destination MAC address for broadcasts is always all fs, such as ffff.ffff.ffff. The source MAC address of the frame will be the specific MAC address of the host. The switch will broadcast the frame to all ports and not just the individual port the ARP request is trying to discover. The switch will not respond directly back with an ARP reply because switches do not process ARP requests; only routers can respond when configured as an ARP proxy, which is very rare.