The correct option is D 1,2 and 3
The first trial, that of Shah Nawaz Khan, Gurbaksh Singh Dhillon and Prem Sahgal was held between November and December 1945 against the backdrop of general elections in India with the Attorney General of India, Noshirwan P. Engineer as the chief prosecutor and two dozen counsel for the defense, led by Sir Tej Bahadur Sapru and fronted by Lt. Col Horilal Verma Bar At Law.