16. The sum of which of the following would necessarily be equal to the adult population according to TUIK labor force survey classifications? [Adult population is defined as everyone who is 15 or older.]
a. not in the labor force, employed
b. employed, unemployed, potential labor force
c. potential labor force, labor force
d. employed, unemployed, people in retirement, people in education
e. not in the labor force, employed, unemployed.