Mindy's company manufactures rubber balls used by elementary schools for playground activities. The table below sets out her firm's production cost information. Some values are missing. Which ofthe following statements is correct? Quantity Variable Cost Fixed Cost Total Cost Average Marginal Variable Cost Cost {5 per [$ per unit] unit} 40 _- _- 3 A 60 6.6? G a) A = 20; E = 45 O b) A = 20; E = 5 O C) A = 25; E = 45 d) A = 25; E = 5