On December 31, 2020, Manny Ltd. owes Stew Corp. $50,000 on a 10% note payable. Two years of interest is also unpaid and due. Manny cannot pay off the debt. Stew agrees to reduce the principal amount to $30,000, forgive the accrued interest owed, extend the due date to December 31, 2023, and reduce the interest rate to 5% per year for the extended period. What amount of gain on restructuring should Manny record? a. $25,500 b. $11,000 c. $20,000 d. $21,000