Which of the following statements are correct? Multiple select question. The more horizontal the demand curve, the smaller the change in the equilibrium quantity from a shift of the supply curve. The more horizontal the supply curve, the smaller the change in the equilibrium quantity from a shift of the demand curve. The more vertical the supply curve, the smaller the change in the equilibrium quantity from a shift in the demand curve. The more vertical the demand curve, the smaller the change in the equilibrium quantity from a shift of the supply curve