Net reproduction rate is :
Total Fertility Rate(TFR) : Number of babies born to a woman
Gross Fertility Rate(GFR) : Number of girl babies born to a woman
Net reproduction rate(NRR) : Number of girl babies born to a woman and taking into account only alive once.
Number of girl babies born to a women
Number of babies born to a women
Number of girl babies born to a women and  taking into account only alive once
None of the above