The Appliance Store Told the Home Owner That It Would

The appliance store told the home owner that it would deliver her new stove on Monday between 4 p.m. and 5 p.m. Obviously, the store is uses which of the following waiting line strategies?

A) Establishing a reservation process
B) Making waiting fun or at least tolerable
C) Expanding waiting room capacity
D) Differentiating waiting customers
E) Employing operational logic