Which of These People Could Officially Be Counted as Unemployed

Multiple Choice

Which of these people could officially be counted as unemployed?

A) a garage attendant who got fired from his old job two months ago but will start a new job in two weeks
B) a busboy who works only four hours a day, five days a week, but would prefer to work full-time as a waiter
C) an accountant who quit her job when she had a baby two months ago
D) a woman who joined the babysitters' union several months ago and averages about five customers a week at her $10/hour rate
E) none of the above