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32. The supply curve for lawn-mowing services is likely to slope upward because of (A) decreasing marginal costs (B) increasing opportunity cost of time (C) diminishing marginal utility (D) increasing returns to scale (E) economies of scope 33. If both supply and demand increase, the result is (A) a definite increase in price and an indeterminate change in quantity (B) a definite increase in quantity and an indeterminate change in price (C) a definite decrease in quantity and an indeterminate change in price (D) a definite decrease in price and a definite increase in quantity (E) a definite increase in price and a definite increase in quantity