If the Ricardian equivalence held true, its graphical representation would show: a. The curve representing government borrowing and the one representing public savings would increase or decrease together. b. The curve representing government borrowing and the one representing public savings would change in opposite directions (if one rises, the other falls). c. The curve representing government borrowing and the one representing private investment would increase or decrease together. d. The curve representing government borrowing and the one representing private investment would change in opposite directions (if one rises, the other falls)