A router receives only packets of the same si1e and dispatches them in order [mat is, in the order of arrival] each time unit T. The statistics of the arrival and dispatch of queued packets obey To the following rules: I The probability p of arrival of a packet in time unit T is small. I The probability C] that a package will be dispatched in die unit of time T is small. I [1} Fl I The probability of arrival of two or more packeis in the unit of time T is negligible. I The probability of dispatching two or more packages in the unit of time T is negligible. Deterrnine:| {c} The average number of items in the router's queue