1) RS passed which bill to amend existing offences and add new offences to the SC and ST (Prevention of Atrocities) Act 1989?
a. Scheduled Caste and Scheduled Tribes (Prevention of Atrocities) Bill 2015
b. Schedule Caste and Schedule Tribe (Prevention of Atrocities) Amendment Bill 2015
c. SC &ST (Prevention of Atrocities and Actions ) Bill 2015
d. SC &ST ( Prevention of Violence) Bill 2015