South Africa has some of the highest unemployment rates in the south of the Sahara, ----.

A) but it is easier to put off hiring young people than it is to fire older workers

B) so these governments tend to take a more active role in finding jobs for those who are struggling

C) partly because it has powerful trade unions and rigid rules about hiring and firing

D) thus governments should continue with the established policy of boosting the number of people who graduate from university

E) which means expanding the study of science and technology and closing the gap between the world of education and the world of work