Vargo Corp. owes $288,000 to First Trust. The debt is a 10-year, 12% note due December 31, 2014. Because Vargo Corp. is in financial trouble, First Trust agrees to extend the maturity date to December 31, 2016, reduce the principal to $235,500, and reduce the interest rate to 6%, payable annually on December 31. (a) Prepare the journal entries on Vargos books on December 31, 2014, 2015, 2016. (b) Prepare the journal entries on First Trusts books on December 31, 2014, 2015, 2016.