GMAT Critical Reasoning (CR) | Re: In the last ten years, usage of pay phones in Bridgeport has dropped b

In the last ten years, usage of pay phones in Bridgeport has dropped by 90%.Since cell phone usage is much higher among middle- and upper-income residents of Bridgeport than among lower-income residents, the Bridgeport City Council has decided to remove pay phones from middle- and upper-income neighbourhoods, while retaining those in lower-income neighbourhoods, reasoning that this plan will respond appropriately to demand for pay phones and thereby inconvenience very few people.

Which of the