Sirius Has Just Finished High School and Started Looking for His

Multiple Choice

Sirius has just finished high school and started looking for his first job,but has not yet found one.Other things the same,the unemployment rate

A) and the labor-force participation rate both increase.
B) increases,and the labor-force participation rate is unaffected.
C) is unaffected,and the labor-force participation rate increases.
D) and the labor-force participation rate are both unaffected.