Matilda just graduated from college. In order to devote all her efforts to college, she didn't hold a job. She is going to tour around the country on her motorcycle for a month before she starts looking for work. Other things the same, the unemployment rate...

a. increases, and the labor-force participation rate is unaffected.

b. and the labor-force participation rate both increase.

c. and the labor-force participation rate are both unaffected.

d. increases, and the labor-force participation rate decreases.