In 2004, based on concepts similar to those used to estimate U.S. employment figures, the Japanese adult non-institutionalized population was 109.684 million, the labor force was 65.760 million, and the number of people employed was 62.630 million. According to these numbers, the Japanese labor-force participation rate and unemployment rate were about:_______

a. 57.1% and 2.9%
b. 60% and 4.8%
c. 57.1% and 4.8%
d. 60% and 2.9%