For the year ending December 31, 2020, Cobb Company accumulates the following data for the Plastics Division which it operates as an investment center: contribution margin-$612,450 budget, $630,396 actual; controllable fixed costs-$298,800 budget, $304,200 actual. Average operating assets for the year were $2,091,000. Prepare a responsibility report for the Plastics Division beginning with contribution margin for the year ending December 31, 2020. (Round ROI to 1 decimal place, e.g. 1.5%.) COBB COMPANY Plastics Division Responsibility Report For the Year Ended December 31, 2020 Difference Favorable Unfavorable Neither Favorable nor Unfavorable Budget Actual $ $ $ $ $ $ % % %