Gobbler Pie Company produces five types of frozen pies. Each type of pie filling requires a certain number of hours in a large commercial mixer, but Gobbler owns only one mixer. Consequently, the limited number of mixer hours is a constraint on production. To maximize its operating income, Gobbler should emphasize production of the type of pie that: Generates the highest contribution margin per pie the least amount of mixer time per selling price of the pie Uses the least amount of mixer time per pie produced Generates the highest contribution margin per mixer hour None of the