Consider the Economy's Upward- Sloping Supply of Saving Curve

Consider the economy's upward- sloping supply of saving curve. An increase in the interest rate causes ; an increase in current income causes _.

A) a shift of the curve to the left; a movement downward along the curve.
B) a movement upward along the curve; a shift of the curve to the right.
C) a movement upward along the curve; a movement downward along the curve.
D) a movement downward along the curve; a shift of the curve to the right.
E) a shift of the curve to the left; a movement upward along the curve.