When a packet collision between two systems occurs on an Ethernet network, Carrier$-$Sense Multiple Access with Collision Detection $($CSMA$/$CD$)$ causes the two systems to stop transmitting and generate a jam signal. After sending the jam signal, why do the two systems wait for a randomized backoff interval before retransmitting their packets?

Question $57$ options:

They need time to reassemble the packets.

To prevent another collision from occurring.

They need to rebuffer the packet.

To recalculate the packets' checksum values.