1. (24 Points) Retro iPhone Covers LLC manufactured and sold 1,000 iPhone covers during March. March was their first month of operation and all of the covers were sold, so there was no beginning or ending inventory. Sales $110,000 $31,000 Direct materials used Direct labor $16,000 Variable Mfg. Overhead $13,000 Fixed Mfg. Overhead $11,000 $X $Y Variable selling and administrative expenses Fixed selling and administrative expenses Contribution margin Operating income $40,000 $22,000 a) What were the variable selling and administrative expenses ($X)? b) What were the fixed selling and administrative expenses ($Y)? c) What was the cost of goods sold during March