GRE Question of the Day (August 12)

In the circle graphs, the degree measure of the central angle of the sector representing the number of workers unemployed for 11 to 14 weeks is how much greater in the manufacturing industry graph than in the service industry graph?

A 5 \({^o}\)
B 10\({^o}\)
C 15\({^o}\)
D 18\({^o}\)
E 20\({^o}\)