Which of the following statements is true about the long-run and short-run aggregate supply curve in the classical model? Question 16 options: The long-run aggregate supply curve is not defined, and the short run curve is vertical. The long-run curve is vertical, and there is no short-run curve since all adjustments occur quickly. The long-run aggregate supply curve is vertical, and the short-run curve is horizontal. The long-run and short-run curves start out horizontal and eventually become vertical