$($c$)(10pts)$ Compute the taxable income for year $4.$

A$)$ $$55000$

B$)$ $$98000$

C$)$ $$127000$

D$)$ $$151000$

$($d$)(10pts)$ Compute the after tax cash flows

$($e$)(10pts)$ Compute the present worth of the after tax cash flows, for $i=9\frac{\%}{?}$ year.