Current Attempt in Progress The following amortization and interest schedule reflects the issuance of 10-year bonds by Marin Corporation on January 1, 2014, and the subsequent interest payments and charges. The company's year-end is December 31, and financial statements are prepared once yearly. Amortization Schedule Year Cash Amount Interest Unamortized Carrying Value 1/1/2014 $19,607 $153,893 2014 $17,350 $18,467 18,490 155,010 2015 17,350 18,601 17.239 156,261 2016 17,350 18,751 15.838 157,662 2017 17,350 18.919 14,269 159.231 2018- 17.350 19.108 12.511 160,989 2019 17.350 19.319 10,542 162.958 2020 17.350 19.555 8,337 165,163 2021 17,350 19.820 5,867 167,633 2022 17,350 20,116 3,101 170,399 2023 17.350 20,451 173,500 (a) Indicate whether the bonds were issued at a premium or a discount. (b) indicate whether the amortization schedule is based on the straight-line method or the effective-interest method.