The Marginal Propensity to Consume Is the

The marginal propensity to consume is the

A) amount by which disposable income increases when consumption increases by $1.
B) amount by which consumption increases when disposable income increases by $1.
C) percentage by which consumption increases when disposable income increases by $1.
D) percentage by which disposable income increases when consumption increases by $1.
E) ratio of consumption to disposable incomE.