Consider the following statements:In a single-server queuing model1. The arrivals is a memory less process2. The arrivals is described as a Poisson distribution3. Uncertainty concerning the demand for service existsWhich of the above statements are correct?

Consider the following statements:In a single-server queuing model1. T

1.	Consider the following statements:In a single-server queuing model1. The arrivals is a memory less process2. The arrivals is described as a Poisson distribution3. Uncertainty concerning the demand for service existsWhich of the above statements are correct?
A.	1 and 2 only
B.	1 and 3 only
C.	1, 2 and 3
D.	2 and 3 only
Answer» D. 2 and 3 only