Select all that apply With respect to the short-run average cost curves, what is true of the long-run average cost curve? Multiple select question. It lies above every point of the short-run average cost curves. It equals short-run average cost when short-run curves use fixed inputs optimally. It lies above no point of the short-run average cost curves. It equals short-run average cost when short-run curves use variable inputs optimally. Need help? Review these concept resources