In which year Kushal Konwar was Hanged by the British and for what cause

[A] 1930, spearheading Quit India Movement in Upper Assam

[B] 1921, facilitating Non-Cooperation Movement and Satyagraha in Sivasagar

[C] 1942, decleared guilty of conspiracy for a train derailment near Golaghat

[D] None of above