7. The following represent a partial section of the bond amortization schedule. Dates before 6/30/19 and after 6/30/20 are not shown. 6/30/19 12/31/19 6/30/20 Payment 50,000 50,000 50,000 Interest Expense 72,212 72.879 73,565 Discount Amortization 22.212 22,879 23,565 Unamortized Discount 70,713 47.834 24.269 Bonds Payable 2,500,000 2,500,000 2,500,000 Net Book Value 2,429,287 2.452,166 2,475,731 Based on the schedule, what is the market rate for this bond? a. 2% b. 3% c.4% d. 6% e. None of the above