When Muslim League observed Day of Deliverance?

When Muslim League observed Day of Deliverance?
A: 17 September 1938
B: 18 September 1938
C: 19 September 1938
D: None of these (22 December 1939)

The All-India Muslim League observed “Day of Deliverance” on 22 December 1939. It marked the resignation of Congress ministries. The date reflects political polarization of the time.