Assume the labor force is made up of 50% women and 50% men. If 50% of all manufacturing jobs are held by women and 90% of the highest-paying management and executive level jobs in manufacturing are held by men, then, with respect to the manufacturing sector, ceteris paribus: there is no horizontal occupational segregation but there is vertical occupational segregation. there is both horizontal and vertical occupational segregation. there is sex-based discrimination in entry-level and management-level positions. there is no sex-based discrimination