Regression analysis, multiple choice. Lorenzo Company estimated the behavior pattern of maintenance costs. Data regarding maintenance hours and costs for the previous year and the results of the regression analysis follow: Month Hours of Activity Maintenance Costs 240 160 200 150 250 155 160 260 245 235 175 170 2,400 S 4,200 3,000 3,600 2,820 4,350 2,960 3,030 4,470 4,260 4,050 3,300 3,160 $43,200 January February March April May June August September October November December Sum for 12 mon