In January of 2001,the Population of the United States Was

In January of 2001,the population of the United States was 276.8 million,the working-age population was 210.2 million,the total number of people employed was 140 million,and the total number of people unemployed was 5.0 million.What was the labor force participation rate?

A) 78 percent
B) 56 percent
C) 69 percent
D) 90 percent
E) 67 percent