"After a gap-up opening, Nifty 50 faced resistance around 19,250-19,300 levels, and we can see maximum put writing at 19,200 levels, which may act as strong support for Nifty. We can see maximum open interest in the 19,300 call option, so one should only be bullish on Nifty if it closes above its crucial 100-day moving average, which is placed at 19,300," said Kunal Shah, senior technical and derivative analyst, LKP Securities.