A. 1, February 1948
B. 1, March 19148
C. 1, April 1948
D. 1, May 1948
Explanation:
It occurred on April 1, 1948, when East Punjab in India discontinued the flow of cannel waters to West Punjab that became a huge threat of dearth and loss of crops in West Punjab. West Punjab is a productive land but a hot and dry climate.