No naked trade. Use strategy Buy 1700 call , Buy 1700 put . Buy 1700 call , sell 1850 call . Buy Dec future , sell 1700 call.
Lot size is 500 , Manage risk : This stock has high movements (around 80-100 rs), so even lot size is less ,big price movement gives high risk. Don't over leverage. Don't trade F&O if not enough capital. Consult your financial adviser before taking trade