A gas station convenience store, on average, is able to charge consumers more and obtain a higher price for its energy drinks than the Walmarts or the Dollar Gentrels because the convenience store

a$.$ differentiates based on quality.

h$.$ differentiates based on high barriers to entry, such as patents.

c$.$ differentiates based on type.

d$.$ advertises that its energy drinks are identical to those sold at Safeway.

e$.$ differentiates based on location.