Suppose N packets arrive simultaneously to a link at which no packets are currently being transmitted or queued. The length of these packets are L,2L,3L,,NL bits respectively (they will also be transmitted in this order) and the link has transmission rate R bps. What is the average queuing delay for the N packets? (L/R)(N21)/3(N1)L/(2R)(L/R)(N2+1)/6(L/R)(N21)/6(N+1)L/R(L/R)(N2+1)/3(N1)L/R(N+1)L/(2R)