In Arcadia, of residents who installed new smoke alarm systems in their homes, the fraction who purchased their equipment from Fire-Away Home Protection Systems has declined by ten percent over the last five years. Since the company is one of the biggest employers in Arcadia, this drop is expected to result in numerous job losses and therefore damage the city's overall reputation.
Which of the following, if true, most seriously weakens the argument given?
(A) The percentage of homes in Arcadia with smoke alarm systems installed is one of the highest in the nation.
(B) A company that gained market share in the last five years,Smoke-Off Inc., does not employ any Arcadia residents.
(C) The majority of Fire-Away's annual revenue comes from maintaining existing smoke alarm systems.
(D) In the last five years, thirty percent of Arcadia residents have purchased new carbon monoxide alarms, which Fire-Away does not sell.
(E) Since Fire-Away relocated to Arcadia, the amount of fire-related damage to property in Arcadia has decreased by two-thirds.