In Fall 2009,the Population of the United States Was 301

In fall 2009,the population of the United States was 301 million,the working-age population was 235.7 million,the total number of people employed and unemployed was 154.9 million,and the total number of unemployed people was 14.7 million.What is the unemployment rate?

A) 51 percent
B) 6.2 percent
C) 4.9 percent
D) 9.5 percent
E) 4.6 percent