Four of the most widely used waiting line modelsM/M/1 or A, M/M/S or B, M/D/1 or C, and Limited population or D-all share which of the following three characteristics?

Select one:

a. Poisson arrivals, single-server, and FIFO discipline

b. Poisson arrivals, FIFO discipline, and a single-service phase

c. Poisson arrivals, FIFO discipline, and exponential service times

d. Poisson arrivals, no queue discipline, and exponential service times

e. normal arrivals, FIFO discipline, and normal service times