You are put in charge of choosing an agitator to employ in your fermentation process. The process has the following parameters: PL = 1000 kg/m Happ = 0.002 kg/m's N = 120 rpm Based on your literature review, you narrow down your option to two choices:- Option 1 Option 2 Cost $ 10 000 $ 45000 Impeller type Disk Type Flat-blade W/D 1/5 1/5 D 0.75 m 0.75 m You plan to operate your process 24 hours a day, 340 days out of the year, for 3 years. Compare which type of impeller has less overall cost and how much money is saved? Cost of electricity is $ 0.06 per kW.hr ($0.06/ kW.hr)