A company is considering two alternative investments in a machine as part of a workshop upgrade. Partial results of some financial analysis are as follows: ARR Payback Period NPV @ 6% IRR pa Machine A 45% 2.5 years $21,666 32% Machine B 61% 52% Machine B will cost $16,000 and have estimated annual incremental cash flows of $10,000 for the next 3 years AND an estimated salvage value of $8,000 at the end of the 3 year period