Which of the Following Is the Definition of Consumer Surplus

Multiple Choice

Which of the following is the definition of consumer surplus?

A) the difference between the value that consumers place on a good and the payment they make to buy the good,summed over the quantity consumed
B) the total value that consumers place on the quantity consumed of some good
C) the quantity consumed in excess of the allocatively efficient amount
D) the value that consumers place on the last unit consumed of a good
E) the marginal value that consumers place on the last unit consumed of a good