The manufacturing costs of Calico Industries for 3 months of the year are as follows: Total Cost Production (units) April $118,900 283,400 May 83,600 160,900 June 104,000 245,400 Using the high-low method, the variable cost per unit and the total fixed costs are Round your intermediate calculations to two decimal places. Oa. $5.22 per unit and $3,671, respectively Ob. $0.52 per unit and $18,357, respectively Oc. $2.90 per unit and $3,671, respectively Od. $0.29 per unit and $36,714, respectively