Refer to the Diagram for a Private Closed Economy $\left( \mathrm { C } + I _ { g } \right) _ { 1 }$

Multiple Choice

Refer to the diagram for a private closed economy. The upward shift of the aggregate expenditures schedule from $\left( \mathrm { C } + I _ { g } \right) _ { 1 }$ to $\left( \mathrm { C } + I _ { g } \right) _ { 2 }$ reflects

A) an increase in investment expenditures.
B) a decrease in consumption expenditures.
C) an increase in the MPC.
D) an increase in the APS.