moodle.esc.edu red PO 13 Month Total Maintenance Cost Production Volume (units) d out of January February $1,980 1,850 units $1,800 1,500 units March $2,200 2,600 units g tion April $2,180 2,275 units May $2,300 2,750 units Using the high-low method, the monthly fixed component of maintenance cost is: Select one: a. $1,600. b. $1,200. c. $1,100. d. $1,300. VPN