Riley Co$.$ incurred the following costs during $2021$:Significant modification to the formulation of a chemical product $$160,000$Trouble$-$shooting in connection with breakdowns during commercial production $150,000$Cost of exploration of new formulas $200,000$Seasonal or other periodic design changes to existing products $185,000$Laboratory research aimed at discovery of new technology $355,000$In its income statement for the year ended December $31,2021,$ Riley should report research and development expense of