firms trust each other? Please select two correct answers. Select all that apply: Yes, all firms and their executives are trustworthy. Yes, oligopolists can trust each other because no firm in an oligopoly has any incentive to betray other firms. No, the threat of betrayal and earning less profit discourages firms from trusting one another. No, firms are self-interested. The firm knows it can earn greater profits if it betrays the other firm(s) in the market than it would earn if it were betrayed by the other firms