C) You are an electrical engineer for a company that makes transformers. You need to buy a new electric motor for the ventilation fan for an important chemical process in the plant. You are choosing between two 12 Kilowatt motors. Motor 1 costs $9,000 and runs at 92% efficiency. Motor 2 costs $5,000 and run as 84% efficiency. Electricity cost $.12 per kilowatt-hour. You would run each motor for 4,000 hours per year. Your study period is 7 years and your MARR-16%. Based on the annual worth (AW) method of study, which motor should you buy and by how much