Behavioral economists attribute some consumer behavior to the endowment effect. Which of the following is an example of the endowment​ effect? An example of the endowment effect is: A. buying lottery tickets with an expected value that is less than their price. B. being unwilling to sell a vase for a price that is greater than the price you would be willing to pay to buy the vase if you​ didn't already own it. C. being willing to will your descendents a car upon your death that you otherwise could have sold for a substantial price. D. being unwilling to sell a painting that you already own. E. taking into account nonmonetary opportunity costs such as the value of your time.