Healthy Correction must come at this level. Nifty and B-Nifty both are at Major psychology resistance 18000 and 39770-40000. On Friday both make bearish engulfing candle with heavy selling from over bought zone. we are expected still more correction up to 17300 and 38220. Next up move will come when both index close above these psychology levels till stay short. If market rise again and give chance to short near 17800-870 and 39200-450 must short or buy position in Put for 2-7 days