Which of the Following Machines Has the Lowest User Cost

Multiple Choice

Which of the following machines has the lowest user cost? Machine A costs $15,000 and depreciates at a rate of 25%,machine B costs $10,000 and depreciates at a rate of 20%,machine C costs $20,000 and depreciates at a rate of 10%,and machine D costs $17,000 and depreciates at a rate of 11%.The expected real interest rate is 0%.

A) Machine A
B) Machine B
C) Machine C
D) Machine D