Orange 1 hr trendline

Blue 15 mins trendline

Pink 5 mins trendline

Yellow 1 min trendline

Blue resistance level and red support level

Now as per chart 31100 is big support and 31450 is big Resistance in overall

heavy writing at 31500call and 31200 put means they are S & R as per NSE writng

calls having short build and below 31200 lelvel short covering means they are not expecting to go below 31200 so covering shorts but rest all short build up means premium erosion

HDFCBANK call option having long liquidation and also short build means they expecting some fall in hdfcbank