Which of the following statements is/are correct about National Family Health Survey (NFHS)?
       I.           It is conducted in every 5 years.
     II.           The NFHS-5 has captured the data during 2019-20 and has been conducted in around 6.1 lakh households.
   III.           NFHS-5 data shows that there were 1,020 women for 1000 men in the country in 2019-2021.
   IV.           TFR was 2.5 in 2019-2021, just above the replacement fertility rate of 2.1.
there is no specific time of period for conducting NFHS, and TFR was 2 in 2019-2021, just below the replacement fertility rate of 2.1.
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