Following is the debt footnote from the NMG Inc. 2013 annual report (In millions) 1 Real properties with an aggregate book value of $64 million were pledged as collateral at December 31, 2013 for secured debt. 2 Amount includes $100 million of notes issued in 1997 that may be put at the option of the holder on the 20th anniversary of the issue at par value. None of these notes are currently puttable. 3 Interest rate listed in the above table is weighted-average interest rate. Required: a. What is the amount of debt on NMG's balance sheet as of December 31, 2013? b. What proportion of NMG's long-term debt is due before December 31, 2014? c. How much of NMG's assets were pledged as collateral as of December 31, 2013? d. What effect, if any, does NMG's collateral have on its credit risk and interest costs? e. Assume that the notes due fiscal 2039-2043 outstanding at the beginning of the year were 5.09% notes issued to yield 5.3%. At the beginning of the year, these notes had an unamortized discount of $81 million. What interest expense did NMG record for these notes during the 2013 year