13. On March 1, 2015, Dorricks Ltd. borrowed $500,000, issuing a five- year mortgage bond. No principal payments are due until the end of the five-year loan period, but interest, at a nominal annual rate of 4%, is to be paid every six months beginning September 1, 2015. The company's year-end is December 31. Required (a) Using T-accounts, record the 2015 transactions related to the mortgage bond. (b) Show the relevant sections of the balance sheet and income statement in the December 31, 2015 financial statements.