The Labour Force Is Defined as the Number of People

The labour force is defined as the number of people who

A) would like to have a job but have stopped seeking work.
B) are employed plus the number of people who are unemployed.
C) are available and looking for work but are unable to find employment.
D) would like to have a full-time job but are working part-time.
E) are employed minus the number of people who are unemployed.