He is told to assume that: a) the life of each machine is 3 years, and b) the company thinks it knows how to make 12% on investments no more risky than this one. Assume that all expenses are incurred at the end of the year. The NPV for Machine A=$ (round your response to the nearest whole number and include a minus sign if necessary). The NPV for Machine B=$ (round your response to the nearest whole number and include a minus sign if necessary). Using the net present value as the basis of comparing the machines, Tim should recommend