Which of the Following People Has Moved Out of the Pool

Multiple Choice

Which of the following people has moved out of the pool of unemployment?

A) Peter, who just got hired as a part-time security guard
B) Paul, who was laid off two months ago but just got a recall notice to resume his job at the assembly line starting the week after next
C) Mary, who has given up looking for a job, leaving the work force permanently
D) all of the above
E) both Peter and Mary