Argas Conpany, a manufacture of lanpes, copectod sales of 400,000 lamps at $20.00 per unit for 2018 . Verioble manufecturing cose (dieet material, direct labour & overhesd) were bud gotod at $8.00 per anit, and ftred manufocturing cast at 52,000,000. Variable seling conts are $1.20 per unit. Fited selling and adminhtrative easer are $370,000. Required: 1. Propare a detailed contribution inceere statement, in good fornat