Question 14 (4 points) Suppose that there are three firms in the market with the following individual supply function equations qx = Py. qs =3P -60 and q2 -3P -30. Which of the following represents the market supply algebraically? (1) If 10 > P. > 0. Q5 = 5Px - 30; (ii) If 20 > PX > 10, Q2 = 7Px (iii) If Py > 20, Q5 = 7Px - 90 O (i) If 10 > PX > 0, Q5 = 7P - 90; (ii) If 20 > P - 10, Q5 = 4Px - 30 (iii) If Px - 20. Q2 = 0 (1) If 10 > P. > 0. Q5 = 0; (ii) If 20 - PX - 10, Q5 = 4Px - 30 (iii) If PX > 20, Q5 = 7Px - 90 (1) If 10 > P. >0. QS = P; (ii) If 20 > PX > 10, Q5 = 4Px - 30 (iii) If Px > 20 , Q5 = 7Px - 90