Answer:
The correct answer is option B.
Explanation:
Melanie decided to buy a coat at a price of $79.95.
When she brought the coat to the store's sales clerk, Melanie was told that the coat was on sale, and she would pay 20 percent less than the price on the tag.
She got a discount worth $15.99.
The consumer surplus, in this case, will be at least $15.99.
This is because the consumer surplus is the difference between the price the consumer is willing to pay for a good and the price he/she actually pays.
Melanie paid $15.99 less than the price but she may have been willing to pay more than the initial price. So the consumer surplus will be at least $15.99.