To Be Counted as "Employed" in the U

To be counted as "employed" in the U.S. labor force statistics, a person

A) must be working for pay and be working full time.
B) must be working for pay but does not have to be working full time.
C) does not have to be working for pay if they are working for a family business but must be employed full time.
D) does not have to be working for pay if they are working for a family business and does not have to be working full time.