When did East Punjab in India cut off the flow of canal waters to West Punjab in Pakistan?

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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.