ATC 10 AVC 8 Price and costs (dollars per unit) 6 4 2 MR D 2 4 6 8 10 12 Quantity (units per day) For the single-price monopolist illustrated in figure 2 earns an economic profit of Select one: C $8.00 per day C $40.00 per day C C. zero dollars d $10.00 per day