Which of the following statements is true? Group of answer choices O.C. is what you sacrifice when you make a choice or take an action. When computing the O.C., you must take into account only the worst choice among all the other alternatives you could be doing instead. American economist Milton Friedman said, Theres no such thing as a free lunch. Even if you receive something for free, still society had to sacrifice some resources to produce it and provide it to you. All of the above. Only a) and c)