Orion Iron Corporation tracks the number of units purchased and sold throughout each year but applies its inventory costing method at the end of the year, as if it uses a periodic inventory system. Assume its accounting records provided the following information at the end of the annual accounting period, December 31. Transactions a. Inventory, Beginning For the year: b. Purchase, April 11 00 m Units 250 Unit Cost $ 10 600 400 13 250 350 f. Operating expenses (excluding income tax expense), $16,100 c. Purchase, June 1 d. Sale, May 1 (sold for $42 per unit) e. Sale, July 3 (sold for $42 per unit)