O Price ($) 10 9 8 7 6 5 4 3 2 1 0 0 10 20 E 30 40 50 60 Quantity (in thousands) The demand shift results in 70 80 90 100 O a long-run economic profit for the firm. 4 a short-run economic profit for firm. a short-run economic loss for the firm. a short-run economic proft of 0. Supply Demand1 Demand2 Price per unit ($) 10 9 8 7 6 5 3 2 1 0 0 MC SRATC 10 20 30 40 50 60 Quantity 70 80 LRAC P=MR=AR 90 100