Correct Option: A

Bangladesh and India share a 4,096-kilometer-long international border, the longest border that India shares with any country. It is the fifth-longest land border in the world, including 262 km in Assam, 856 km in Tripura, 180 km in Mizoram, 443 km in Meghalaya, and 2,217 km in Bengal. The border demarcates the six divisions of Bangladesh and the Indian states.