There Are Many Critics of the Way the Official Unemployment

There are many critics of the way the official unemployment rate is determined. What would you say is the most significant criticism?

A) The unemployment rate understates the number of workers by eliminating those who have become discouraged and who have accepted part-time work.
B) The unemployment rate includes teenagers who should be in school.
C) The unemployment rate does not include stay-at-home mothers.
D) The unemployment rate does not include undocumented immigrants.