Which one of the following statements is true on the basis of Census - 200l?
(a) Bihar has the highest percentage of the scheduled castes of its population.
(b) The decadal growth of population of India (1991- 2001) has been below 20%.
(c) Mizoram is the India state with the least population.
(d) Pondicherry has the highest *** ratio among the Union Territories.