16. As output increases, eventually (LO7) a) economies of scale become larger than diseconomies of scale b) diseconomies of scale become larger than economies of scale c) economies of scale and diseconomies of scale both increase d) economies of scale and diseconomies of scale both decrease 17. The salaries paid to people who are in the middle of three-year guaranteed contracts are (LO1) a) a fixed cost b) a variable cost c) a fixed cost or a variable cost d) neither a fixed cost nor a variable cost