Correct Option: A

Farakka Barrage is a barrage across the Ganges River, located in the Indian state of West Bengal, roughly 16.5 kilometres from the border with Bangladesh near Chapai Nawabganj District. Construction was started in 1961 and completed in 1975. The barrage was built to divert up to 44,000 cu ft/s (1,200 m3/s) of water from the Ganges River into the Hooghly River during the dry season, from January to June, in order to flush out the accumulating silt which in the 1950s and 1960s was a problem at the Port of Kolkata (Calcutta) on the Hooghly River.