Answer:
I will start with B and C)
The journal entry to record bond issuance:
January 1, 2020, bonds issued at a premium
Dr Cash 415,163
Cr Bonds payable 400,000
Cr premium on bonds payable 15,163
December 31, 2020, first coupon payment
Dr Interest expense 41,616.30
Dr Premium on bonds payable 2,383.70
Cr Cash 44,000
amortization of bond premium = (415,163 x 10%) - 44,000 = 2,383.70
December 31, 2021, second coupon payment
Dr Interest expense 41,277.93
Dr Premium on bonds payable 2,722.07
Cr Cash 44,000
amortization of bond premium = (412,779.30 x 10%) - 44,000 = 2,722.07
December 31, 2023, third coupon payment
Dr Interest expense 41,005.72
Dr Premium on bonds payable 2,994.28
Cr Cash 44,000
amortization of bond premium = (410,057.23 x 10%) - 44,000 = 2,994.28
A) I used an excel spreadsheet to prepare the amortization schedule