27. Smith says that if government purchases rise by $100 billion, the AD curve will shift to the right. Jones says that if government purchases rise by $100 billion, the AD curve will not shift to the right. It follows that A. Smith believes there will be complete crowding out and Jones believes there will be zero crowding out. B. Both Smith and Jones believe there will be incomplete crowding out, although Jones believes there will be more incomplete crowding out than Smith believes there will be. C. Smith believes there will be zero or complete crowding out and Jones believes there will be complete crowding out. D. Smith believes there will be incomplete or zero crowding out and Jones believes there will be complete crowding out