If the consumption function is plotted on the vertical axis of a graph with disposable income on the horizontal axis:

a.the vertical axis intercept will be determined by the marginal propensity to save.b.the horizontal axis intercept will be determined by the level of autonomous consumption.c.the slope of the line will be positive and determined by the marginal propensity to consume.d.the slope of the line will be negative and determined by the marginal propensity to save.