There will be no lines or wait times in a process with an average process capacity of $20$ customers$/$hour encountering an average arrival rate of $18$ customers$/$hr$.$A$.$ The above statement is true.B$.$ The above statement is true only when a process with an average process capacity of $20$ customers$/$hour encounters an exact and fixed arrival rate of $18$ customers$/$hr$.$C$.$The above statement is incorrect $-$ a line growth rate @$2$ customers$/$hr will be experienced.D$.$The above statement is incorrect.