In the simple aggregate expenditure model,the slope of the aggregate expenditure line depends on:

A) interest rates.
B) real gross domestic product.
C) the price level.
D) the marginal propensity to consume.
E) the marginal propensity to save.

Aggregate Expenditure

The total spending on final goods and services in an economy, including consumption, investment, government spending, and net exports.

Marginal Propensity

The tendency of an individual or household to spend an extra unit of currency, reflecting the change in consumption from a change in income.