_________ describe a production process in which an increase in the number of units produced causes a decrease in the average cost of each unit, whereas __________ describe a production process in which the average total cost of production decreases as a result of increasing the number of different goods produced.

• A. Economies of scale /;/ Economies of scope
• B. Economies of scope /;/ Economies of scale
• C. Econometrics of scale /;/ Econometrics of scope
• D. Economical scope /;/ Economical scale
• E. None of these are correct