The BSE benchmark index Sensex roseby 83 points in early trade today on selective buying by funds as well as retail investors ahead of Reserve Bank of India's Monetary policy review later in the day.The 30-share benchmark index, which gained over 13 points yesterday, rose further by 83.09 points, or 0.50 per cent, to 16,834.82 points. The National Stock Exchange Nifty index moved up by 14.65 points, or 0.29 per cent, to 5,060.90 points.Banking, capital goods, consumer durables and oil and gas stocks were leading the rise in opening trade.