Suppose there are two links between a source node A$$and a destination node B via a packet switch node C$.$ The first link has a transmission rate of RAC$$ bps and the second link has a transmission rate of RCB$$bps$.$ Assuming RAC$<$ RCB$.$ Now, node A sends two packets, p$1$ and p$2,$ back to back to destination B via node C$,$ and there is no other traffic on this path. Assume each packet of size L bits, and both links have the same propagation delay dprop.$$ What is the packet inter$-$arrival time at the destination? That is$,$ how much time elapses from when the last bit of the first packet arrives until the last bit of the second packet arrives?