In his summary of the work, the mayor said that in each of the past five years, the city has cut education funding, and every time school officials complain that reducing education funding may force them to reduce the cost of basic services. Each time, it only reduces the cost of non-essential services; therefore, school officials can implement further cuts in funding without reducing the cost of any essential services. Which of the following, if true, would best support the mayor's conclusion? ['The provision of basic services by schools in the city is always as effective as the provision of non-essential services.', "Since the recent cuts in school funding, the city's schools have estimated that prices for non-essential services have not actually increased.", 'Adequate funding now allows schools in the city to provide certain non-essential services.', "Few important city managers support expensive non-essential services in the city's schools."]