Brief Exercise 23-08 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-$612,950 budget, $622,669 actual; controllable fixed costs-5302,000 budget, $305,500 actual. Average operating assets for the year were $2,073,000. 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 Plastica Division Responsibility Report For the Year Ended December 31, 2020 Difference Favorable Unfavorable Neither Favorable nor Unfavorable