Situation 7-1 Diane's Donuts will begin selling donuts next week. Diane figures that the ingredients necessary to make donuts will cost $.05 per donut. She has paid $4,400 for the donut-making machinery and one year's rent. Refer to Situation 7-l. What is the marginal cost of the 2,500th donut? Group of answer choices $0.038 $0.088 $0.138 $0.050 There is not enough information to answer the