Which statement about IP-directed broadcast is true?

[answerhappygod]

Which statement about IP-directed broadcast is true?

A. When a directed broadcast packet reaches a switch that is directly connected to its destination subnet, that packet is "exploded" as a broadcast on the destination subnet.
B. An IP-directed broadcast is a packet whose destination address is a multicast group to send the packet to a group of hosts in a local or remote network.
C. An IP-directed broadcast is an IP packet whose destination address is a valid unicast address, but which originates from a node that is itself part of that destination subnet.
D. All switches in the network forward an IP-directed broadcast in the same way they forward unicast IP packets.