9. Who among the following is "not in the labor force."?

a.) Milton, who devotes all his time to his studies at the Julliard School of Music, hoping that someday his hard work and the prestige of the school will take him to his goal in life- first chair violinist with The Philadelphia Orchestra.

b.) Edwin, who has never worked at a job one day in his life but now, after his recent graduation from the Julliard School of Music, has been to an audition with the Philadelphia Orchestra.

c.) Both are in the labor force.

d.) Neither one is in the labor force.