Which of the following constitutional amendment provided a separate commission for scheduled castes and scheduled tribes?

A. 89^th B. 90^th C. 95^th D. 97^th

A. Art. 342 B. Art. 343 C. Art. 344 D. Art. 345

A. October, 2005 B. October, 2006 C. October, 2007 D. October, 2008

A. Art. 164 B. Art. 165 C. Art. 166 D. Art. 167