Which of the following statements is true? Group of answer choices

Property rights extend to intellectual property through patents, copyrights, and trademarks.

Self-interest is one of the driving forces in a market system. Firms try to maximize profits, and consumers try to maximize utility (a measure of satisfaction). As they try to pursue their own self-interest, the economy benefits (if competition is present).

Competition requires one or more independently acting buyers and sellers. Competition decentralizes economic power.

All of the above.

Only a) and b)