According to the text, civil rights activists maintain that one disadvantage under which m

inority-owned businesses have traditionally had to labor is that they have _____.

A．been especially vulnerable to government mismanagement of the economy.

B．been denied bank loans at rates comparable to those afforded larger competitors.

C．not had sufficient opportunity to secure business created by large corporations.

D．not been able to advertise in those media that reach large numbers of potential customers.