Answer:
no option is correct, the correct answer is $12,630
Step-by-step explanation:
after tax salvage value of old machine = $12,000 - [($12,000 - $15,000) x 21%] = $12,000 - (-$3,000 x 21%) = $12,000 - -$630 = $12,630
the tax shield generated by this loss (market value is lower than book value) = $630
the cash received form the sale = $12,000
the combined effect = $12,000 + $630 = $12,630