consider two gas stations. one is located at a major intersection used by people commuting from populous neighborhoods to jobs located in the downtown area. the other is located on the outskirts of the city. both gas stations sell high-grade or premium-grade gas for a higher price than low-grade or regular-grade gas. however, the gas station along the more congested route charges higher gas prices for all grades than the station on the outskirts of town. these gas stations offer product differentiation based on which of the following? check all that apply. location quality style true or false: positive short-run profit can occur as a result of advertising in a monopolistically competitive market. true false