The diagram below represents a five-sector circular flow of income model for an open economy. The variables X1X_1X1, X2X_2X2, and X3 X_3\,X3 represent specific economic flows passing through intermediate sectors.
Which of the following correctly classifies the flows X1X_1X1, X2X_2X2, and X3 X_3\,X3 and states the algebraic condition required for macroeconomic equilibrium?
X1X_1X1: Leakage; X2X_2X2: Injection; X3X_3X3: Leakage; Equilibrium: X1+T+X3=I+X2+XX_1 + T + X_3 = I + X_2 + XX1+T+X3=I+X2+X
X1X_1X1: Leakage; X2X_2X2: Leakage; X3X_3X3: Injection; Equilibrium: X1+T+X2=I+X3+XX_1 + T + X_2 = I + X_3 + XX1+T+X2=I+X3+X
X1X_1X1: Injection; X2X_2X2: Injection; X3X_3X3: Leakage; Equilibrium: X3+T+X=X1+X2+IX_3 + T + X = X_1 + X_2 + IX3+T+X=X1+X2+I
X1X_1X1: Leakage; X2X_2X2: Injection; X3X_3X3: Injection; Equilibrium: X1+T+I=X2+X3+XX_1 + T + I = X_2 + X_3 + XX1+T+I=X2+X3+X
