The correct option is B 02 July 1972
Shimla agreement was signed by Indian PM Indira Gandhi and Pakistan President Zulfikar Ali Bhutto on 2nd July 1971. It was a comprehensive blue print for maintaining good neighborly relations. Moreover, it brought about the withdrawal of troops and the exchange of prisoners of war. Emphasis was on maintaining each other's territorial integrity, sovereignty, non-interference in internal affairs and renounce hostile propaganda.