In Economics, Cost Is Measured As_{--------------------} , and Benefit Is

In economics, cost is measured as_{--------------------} , and benefit is measured as_{--------------------}.

A) what you are willing to give up to get it; what you must give up to get something
B) the amount of money that you pay for something; the amount of money that someone else is willing to pay you
C) the amount of money that you pay on the margin; the amount of money that you receive on the margin
D) what you must give up to get something; what you are willing to give up to get it
E) what you are willing to pay on the margin; what the government pays you when you are unemployed or retired