Some countries, such as Spain and Austria, have adopted property-rights systems stating that when a person dies, his organs are available for transplant unless he opts out of donating his organs prior to death. This is called the “opt-out”

system of organ procurement. Other countries, such as the United States, have an “opt-in” system, which requires potential donors to provide consent to having their organs used for transplants before they die. Using MB and MC curves for each procurement system, predict which approach will generate more organ transplants.