Suppose that in a population of 50 million persons, 40 million are in the labor force, 36 million are employed, 2 million are classified as unable to work, and 1 million are classified as unwilling to work. The unemployment rate is:_______.
A. 10.0 percent.
B. 72.0 percent.
C. 8.0 percent.
D. 80.0 percent.