Marginal Utility Is Defined As

Marginal utility is defined as:

A) the extra satisfaction the consumer receives from an extra $1 of income.
B) the total level of satisfaction a consumer receives upon the consumption of a certain number of goods.
C) the number of hours a consumer would be willing to work to receive a certain product.
D) the extra satisfaction a person derives from consuming an additional unit of a good.
E) a comparison of the utility a good provides with the price of that good.