Total utility is defined as the:

a. change in marginal utility a person derives from the consumption of a good.
b. change in total utility a person derives from the consumption of a good divided by the price of that good.
c. change in total utility a person derives from the consumption of a good divided by the change in the consumption of that good.
d. sum of the amounts of satisfaction a person receives from consuming a good. change in total utility a person derives from the consumption of a good.