46. During 2011, Leon Co, incurred the following costs: Testing in search for process alternatives S350,000 Costs of marketing research for a new product 250,000 Modification of the formulation of a process 510,000 Costs for a product prototype 425,000 In Leon's 2011 income statement, research and development expense should be a. $510,000 b. $935,000 c. $1.285.000 d. $1,535,000