(A) I said to my friend, “I had seen the launch of the Chandrayaan2 from Sriharikota?”
(B) I said to my friend, “How did you see the launch of the Chandrayaan2 from Sriharikota?”
(C) I said to my friend, “He has seen the launch of the Chandrayaan2 from Sriharikota.”
(D) I said to my friend, “Did you see the launch of the Chandrayaan2 from Sriharikota?”