18. The marginal cost curve intersects at its/their minimum point(s). (LO5) a) the ATC, but not the AVC b) the AVC, but not the ATC c) both the ATC and the AVC d) neither the ATC nor the AVC 19. Average variable cost is found by dividing (LO4) a) variable cost by output b) output by variable cost c) marginal cost by output d) output by marginal cost