10. Suppose that the apple seller has a sale. One can still buy apples for $1 a piece or buy them in bundles of 4 apples for $3. What is the effect on the slope of the budget constraint? (1 point) (a) Decreases; the line looks flatter. (b) Increases; the line looks steeper. (c) The slope remains the same, but the line is always further from the origin. (d) None, the slope remains the same.

Fig: 1