Which one of the following is the correct statement on the basis of Census- 2001?

1. Statement (A) is incorrect. According to Census-2001, Punjab had the highest percentage of Scheduled Caste population to its total population (around 28.9%), not Bihar. 2. Statement (B) is incorrect. The decadal growth of population of India (1991-2001) was 21.54%, which is *not* below 20%. 3. Statement (C) is incorrect. Sikkim was the Indian State with the least population according to Census 2001, not Mizoram. 4. Statement (D) is correct. Among the Union Territories, Pondicherry (Puducherry) had the highest sex ratio (1001 females per 1000 males) as per Census 2001.