Hi, I have one other question. Will you please assist?

Q. Co. X has gathered the following estimates: Machine Machine A B Cost $600,000 $600,000 Life 5 yrs 5 yrs Net Cash Inflow: Yr $100,000 $500,000 1 Yr $200,000 $400,000 2 Yr $300,000 $300,000 3 Yr $400,000 $200,000 4 Yr $500,000 $100,000 5 Co. X uses the net present value method to evaluate capital expenditures. Which of the following two machines has the higher net present value