The correct option is A Ganga
The Farakka Barrage is built across Ganga River and located in Murshidabad district of West Bengal. The barrage is about 2,240 metres long and serves water to the Farakka Super Thermal Power Station. The Feeder Canal (Farakka) from the barrage to the Bhagirathi-Hooghly River is about 40 km long.