Let AE = Aggregate Expenditures, C = Consumption, I_P =

Let AE = Aggregate Expenditures, C = Consumption, I_P = Planned Investment,
G = Government Purchases.Consider a simple aggregate expenditures model, where
AE = C + I_P + G and all components of aggregate expenditures except consumption are autonomous.In this model, the slope of the AE curve is the ___ and the multiplier is _____.

A) MPC; 1 ÷ (1 - MPC) where MPC = marginal propensity to consume
B) MPC; 1 ÷ MPC
C) multiplier; 1 ÷ MPS where MPS = marginal propensity to save
D) MPC; ?AE ÷ ?Y where Y = real GDP