Source: Mumbai: Domestic equity benchmarks BSE Sensex and NSE Nifty started on a cautious note Monday amid weak cues from other Asian markets and rising crude prices. The 30-share index was trading 50.59 points, or 0.13 per cent, higher at 39,245.08 at 0930 hours. Similarly, the broader NSE Nifty was quoting 5.55 points, or