Question 7 1/1 pts According to the Theorem of Coase, a contract can be efficient or optimal: If transaction costs are high. Correct! . If the economic activity the contract generates is efficient. If the promises in the contract are not performed. If the exchange between the parties to the contract is fair. Question 8 1/1 pts An express warranty: Is a mandatory default rule. Never reduces transaction costs. Is not an application of the Normative Coase Theorem. Correct! . Can be an efficient term in a contract