Orion Iron Corp. 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 Units Unit Cost a. Inventory, Beginning 350 $ 14 For the year: b. Purchase, April 11 950 12 c. Purchase, June 1 700 15 d. Sale, May 1 (sold for $42 per unit) 350 e. Sale, July 3 (sold for $42 per unit) 610 f. Operating expenses (excluding income tax expense), $18,000