11-17 only true or false no explanation needed

11. The problem with unilateral contracts is that they are not considered accepted until the performance or substantial performance requested in return to the promise is rendered which essentially leaves the offeree in a potential tenuous position of having the offeror be able to back out of the transaction without any legal liability to the offeree. T F 12. The law favors bilateral contracts and, therefore, a contract is considered created when the offeree has made the return promise to the offeror. TF 13. For a contract to be canceled because of a mistake, the mistake may be either mutual or it can be unilateral if the unilateral mistake is made in good faith. TF 14. When threats are used by someone who does not have a special legal relationship of trust or a confidential relationship to another person to force someone to enter into a contract, the agreement or contract is considered entered into because of undue influence. TF 15. A contract of adhesion is characterized by its shocking unfairness or is shockingly unjust (unfair). T F 16. When it comes to the consideration of a contract, the courts (as has been the traditional approach) do not look into the adequacy or sufficiency of the consideration supporting the transaction if there are not circumstances of fraud, duress, undue influence, mistake, etc. T F 17. An example of a contract that lacks consideration but is still enforced by the courts because this is considered socially beneficial are pledges or subscriptions (which are promises to donate money). TF