A group of four processes PO-P3 sends out multicasts in a run as shown below. The group is using FIFO ordering for multicasts. All sequence numbers start with zeros. The total number of multicasts that are buffered across all processes in this entire run is A group of four processes PO-P3 sends out multicasts in a run as shown below. The group is using FIFO ordering for multicasts. All sequence numbers start with zeros. The total number of multicasts that are buffered across all processes in this entire run is