Step 1: Pigou Effect is the Real-Balance Effect, so (D) pairs with (I).
Step 2: Microeconomics is Price Theory, so (A) pairs with (II).
Step 3: Macroeconomics covers income and employment theory, so (B) pairs with (III), leaving Absolute Income Hypothesis (C) with (IV).
Correct option: (A)-(II), (B)-(III), (C)-(IV), (D)-(I).