Which of the following people would be considered unemployed? Check all that apply.

A. a 17-year-old applies for jobs at fast-food restaurants, but no one hires her.

B. A college graduate spends the summer after graduation touring Europe before starting a job search.

C. A part-time teacher is only able to work two days a week, even though the would like a full-time job.

D. An automobile worker becomes discouraged about the prospects for future employment and decides to quit looking for work.

E. A worker is temporarily laid off from his job as a construction worker, but he expects to be recalled soon.

Please give me the answers and their reasons too. Thank you!