Why Have Unemployment Rates Been About Twice as High Among

Why have unemployment rates been about twice as high among African Americans as among whites?

A) Very few African Americans work in professional or mid-level management jobs.
B) Many African American young adults do not look for work.
C) Many African Americans have been employed in manufacturing and construction which have been hard hit by layoffs.
D) African Americans are more likely to wait for a good job than to take any job.