Smith Glass Co. produces industrial glass. Smith forecasts data using the high-low method and has compiled the following data from prior results: 2016 2017 2018 2019 2020 Total operating hours 5,683 3,197 4,105 5,056 3,586 Inspection cost ($) 50,457 46,835 53,227 49,734 43,649 Required: 1. Which two years should Smith select for the high-low method analysis? Year with highest point: Year with lowest point