Pledge of rights: refers to the debtor or a third party as a guarantee of creditor's rights such as creditor's rights, equity, and copyright. Which of the following is a pledge of rights:. ['Wang owes Zhang 100,000 yuan to mortgage his car to Zhang.', 'Zhang owes his patent right as security for debt settlement due to debt.', 'Pharaoh transferred his shares in the company to his son.', 'Li owes 20,000 yuan to a creditor as a repayment.']