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 isA. 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.B. Being unwilling to sell a painting that you already own.C. Being willing to will your descendents a car upon your death that you otherwise could have sold for a substantial price.D. Buying lottery tickets with an expected value that is less than their price.E. Taking into account nonmonetary opportunity costs such as the value of your time.