Copper Corporation bought a machine for $$63,000$ cash. The estimated useful life was five years and the estimated residual value was $$6,000.$ Assume that the estimated useful life in productive units is $153,000.$ Units actually produced were $40,800$ in year $1$ and $45,900$ in year $2.$

Required:

$1.$ Determine the appropriate amounts to complete the following schedule.

$2-$a$.$ Which method would result in the lowest net income for year $1?$

$2-$b$.$ Which method would result in the lowest net income for year $2?$

$3.$ Which method would result in the lowest fixed asset turnover ratio for year $1?$