Variable and Full Costing: Earnings Management with Full Costing: Changes in Production and Sales [LO 1, 2] Firemaster BBQ produces stainless steel propane gas grills. The company has been in operation for 3 years, and sales have declined each year due to increased competition. The following information is available: a. Calculate profit and the value of ending inventory for each year under full costing. b. Calculate profit and the value of ending inventory for each year under variable costing. c. Explain how management of Firemaster could manipulate earnings in 2018 by producing more units than are actually needed to meet demand. Could this approach to earnings management be repeated year after year