Given a M/G/1 queue, which has packets arriving at a rate packets /sec, an output link rate R bps, and an average packet size of 1500 bytes, write down: a. the expression for T, the average delay for a packet (i.e., from arrival till completing transmission at the output). b. the expression for the output utilization c. the expression for average number of packets in the queue d. the expression for average number of packets in the output NIC