In the Equation Y = C + I + G

Multiple Choice

In the equation Y = C + I + G,

A) only I is an exogenous variable determined by factors outside the model.
B) only G is an exogenous variable determined by factors outside the model.
C) C is an endogenous variable determined by factors inside the model.
D) I and G are exogenous variables determined by factors outside the model.
E) A,b,and c