ConsideThe slope of the indifference curve is the __________, and the slope of the budget curve is the __________. a.) marginal rate of transformation; marginal rate of substitution b.) marginal rate of substitution; marginal rate of transformation. c.) law of diminishing marginal returns; marginal rate of transformation d.) marginal rate of substitution; law of diminishing marginal returnsr the following chart. After which worker does the marginal product of labor (MPL) begin to decrease? Land (20 Acres) (1) Labor (Workers) (2) Total Product (Pounds) (3) Marginal Product of Labor (MPL) (4) 20 acres 0 0 - 20 acres 1 100 20 acres 2 220 20 acres 3 290 20 acres 4 350 20 acres 5 380 20 acres 6 400 20 acres 7 390 a.) After the first worker b.) After the sixth worker c.) After the second worker d.) After the third worker