When a Buyer's Willingness to Pay for a Good Is

When a buyer's willingness to pay for a good is equal to the price of the good,

A) the buyer's consumer surplus for that good is maximized.
B) the buyer will buy as much of the good as the buyer's budget allows.
C) the price of the good exceeds the value that the buyer places on the good.
D) the buyer is indifferent between buying the good and not buying it.