Using the Definition of Unemployment, Which of the Following Individuals

Using the definition of unemployment, which of the following individuals would be unemployed?

A) Because of the increased level of automobile imports, an employee of Holden is laid off but expects to be called back to work soon.
B) Because of a reduction of staff in the health sector by the NSW government, your next door neighbour loses her job and must look for a new job.
C) A full- time student quits school, enters the labour market for the first time, and searches for employment.
D) All of these individuals are unemployed.