When reading the long-run cost curve from left to right, which is the correct order of economies of scale as reflected in the curve? a.) Constant returns-to-scale, economies of scale, diseconomies of scale b.) Diseconomies of scale, constant returns-to-scale, economies of Scale c.) Constant returns-to-scale, diseconomies of scale, economies of scale d.) Economies of scale, constant returns-to-scale, diseconomies of scale