Hello everyone, I'm new here as well as in trading.... I've one doubt... agar Maine 100 wale stock ko 150 per bet kar ke call buy karun... and wahi stock 100 se down hoke 70 per pahuch jaye... and Mera poora loss (like 0) ho jaye.. to uski expirey se pahle use cancle karna padega..?? And what is physical delivery..??? Please help... thank you