9 8 10 11 7 6 5 4 3 1 2 2 1 point ABC Insurance has collected the following information over the last six months. Month March April May June July August Units produced 2,000 3,200 2,200 3,000 2,800 2,100 Previous Total costs $6,700 9,400 7,100 9,500 8,000 6,600 Using the high-low method, how much is the variable cost per unit? $2.80 $2.55 $2.25 $3.14