Xinhong Company is considering replacing one of its manufacturing machines. The machine has a book value of $38,000 and a remaining useful life of five years, at which time its salvage value will be zero. It has a current market value of $48,000. Variable manufacturing costs are $33,100 per year for this machine. Information on two alternative replacement machines follows. Alternative A Alternative B Cost $ 116,000 $ 116,000 Variable manufacturing costs per year 22,000 10,400 Calculate the total change in net income if Alternative A, B is adopted. Should Xinhong keep or replace its manufacturing machine