A new manufacturing machine is expected to cost $278,000, have an eight-year life, and a $30,000 salvage value. The machine will yield an annual incremental after-tax income of $35,000 after deducting the straight-line depreciation. Compute the payback period for the purchase.
A) 8.7 years
B) 3.8 years.
C) 4.2 years
D) 7.3 years
E) 5.4 years