Sardar Bhagat Singh was martyred on March 23, 1931, making option B correctly matched. The "Purna Swaraj" Resolution was actually passed in 1930 (December), not 1929. The Congress Socialist Party was formed in 1934, not 1939. The Simla Conference took place in 1945, not 1940. Only Bhagat Singh's martyrdom year is correctly paired.