Marginal Cost of Bikes $70 This graph shows the marginal costs of each bike, along with the market price. Select the correct answer from the options available. Based on this graph, at which level of production does the producer's profit stop increasing? $60 Market Price $50 $40 Marginal Cost O bike 4 O bike 5 O bike 6 $30 $20 O bike 7 $10 0 Bike 1 Bike 2 Bike 3 Bike 4 Bike 5 Bike 6 Bike 7