The author's primary objective in the passage is to ______.
A．disprove the view that federal efforts to aid minority businesses have been ineffective B．explain how federal efforts to aid minority businesses have changed since the 1960's C．establish a direct link between the federal efforts to aid minority businesses made before the 1960's and those made in the 1980's D．analyze the basis for the belief that job-specific experience is more useful to minority businesses than is general management experience