The total fertility rate (TFR) is ?

The total fertility rate (TFR) is ?

A. The total number of children born in a country in given year a divided by labor force
B. The number of children born to the average woman during her reproductive years.
C. The number of births in a country divided by total population in a given year.
D. The number of woman age 15-45 in a country divided by total population