Consider the following statements: Small-scale industries are in most cases, not as efficient and competitive as the large-scale ones. Yet the Government provides preferential treatment and reservations in a range of products to the small firms because small-scale industries 1. provide higher employment on a per unit capital development basis 2. promote a regional dispersion of industries and economic activities 3. have performed better in export of manufactured products than the large-scale ones 4. provide jobs to low-skill workers, who otherwise may not find employment avenues elsewhere Which of the above statements are correct?