Which of the Following Equations Does Not State a Condition

Multiple Choice

Which of the following equations does not state a condition required for equilibrium output:?

A) Y=C(Y^d) +I+G+CA(EP*/P,Y^d)
B) Y=C(Y-T) +I+G+CA(EP*/P,Y-T)
C) Y=D(EP*/P,Y-T,I,G)
D) R = R* + (EP/E)
E) Y=D(EP*/P,Y^d,I,G)