The benchmark Nifty 50 was caught in bear trap and fell more than 1 percent after recent consolidation, but still defended 21,950 on closing basis, which coincides with 21-day EMA (exponential moving average placed at 21,947) on February 28, a day before the monthly expiry of February futures & options contracts due tomorrow. If the index decisively closes below 21-day EMA, then correction.