As an engineer, you have been asked to recommend a new cooling system for a large warehouse. You have narrowed it down to three different systems with the associated costs shown below If the minimum attractive rate of return in 10%, which system would you recommend. Cooling system B Installation costs $250,000 $300,000 $375,000 Annual operating costs $75,000 $60,000 $80,000 Salvage value None $36,000 $45,000 Lifespan 5 years 7 years 9 years