Archie co. purchased a framing machine for $45,000 on january 1, 2018. the machine is expected to have a four-year life, with a residual value of $5,000 at the end of four years. using the sum-of-the-years-digits method, depreciation for 2018 and book value at december 31, 2018, would be:_________.
a) $18,000 and $27.000.
b) $16,000 and $29,000.
c) $16,000 and $24,000
d) $18,000 and $22,000