The figure below shows the average and marginal cost curves for producing cheeseburgers per hour.
a. At a quantity of 25 cheeseburgers per hour, the average total cost of production is falling and the marginal cost of cheeseburger production is rising Correct.
b. At a quantity of 35 cheeseburgers per hour, the average variable cost of production is rising and the average total cost of cheeseburger production is at a minimum.