3. An engineer must recommend one of two rapid- prototyping machines for integration into an up- graded manufacturing line. She obtained estimates from salespeople from two companies. Salesman A gave her the estimates in constant- value (today's) dollars, while saleswoman B provided the estimates in future (then- current) dollars. The company's MARR is equal to the real rate of return of 20% per year, and inflation is estimated at 6% per year. Use PW analysis to determine which machine the engineer should recommend. (in CV Dollars) -140,000 10 (in Future Dollars) First cost, $ AOC. $ year Life, years 155,000 -40.,000 10 per year 25,000