Which one of the following people would NOT be counted as "unemployed"?

Question 6 options:

(A) A young mother on welfare who can't work because her husband left her and she has no one else to take care of her children.

(B) A recent high-school graduate who quit his first job working in a grocery store so that he can apply for jobs that better fit his interests and start right away if he gets an offer.

(C) A student who graduated this past May. She is looking for a job and hopes to be able to start right away.

(D) A construction worker laid off because of a slowdown in the housing industry. He's been out of work for 6 months. He needs to start working as soon as possible and has started applying for jobs out-of-state.