The slope of the aggregate expenditure function is the sum of the:
A) marginal propensity to consume and marginal propensity to save.
B) marginal propensity to consume and marginal propensity to invest.
C) marginal propensity to consume, marginal propensity to save, and marginal propensity to import.
D) marginal propensity to consume, marginal propensity to invest, and marginal propensity to import.
ANSWER
D
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