Which of the following statements about solid-waste recycling is false? a) it’s less expensive for customers to separate their trash before pickup than to use high-technology recovery plants. b) glass, iron, and aluminum can be recovered from solid wastes. c) low-tech resource recovery involves customers separating trash into categories like glass, paper, plastics, and metal. d) high-technology recycling provides many more jobs than low-technology recycling. e) materials-recovery facilities need a large input of garbage to be financially successful.