The Marginal Rate of Substitution Is the

Multiple Choice

The marginal rate of substitution is the

A) rate at which the consumer will give up one good for an additional unit of the other good, such that total satisfaction is constant.
B) rate at which the consumer can trade one good for the other in the marketplace.
C) change in the quantity of one good that changes the utility received by one unit.
D) same thing as the marginal utility of a good.