Two important rivers - one with its source in Jharkhand (and known by a different name in Odisha), and another, with its source in Odisha - merge at a place only a short distance from the coast of Bay of Bengal before flowing into the sea. This is an important site of wildlife and biodiversity and a protected area. Which one of the following could it be?

The deltaic region formed by the alluvial deposits of river Brahmani, Baitarani and Dhamara (Bhitarkanika) and the Mahanadi deltaic area, comprising of about 3000 Sq. Km. forms the proposed Bhitarkanika Biosphere Reserve. This deltaic region is a unique bioclimatic zone in a typical geographic situation in the coastal region of Bay of Bengal. It is located in the Kendrapara District of the State of Orissa. The proposed Bhitarkanika Biosphere Reserve covers erstwhile Kanika and Kujang Zamindari area. It includes at present three protected areas namely Bhitarkanika Wildlife Sanctuary, Bhitarkanika National Park and the Gahirmatha Marine Wildlife Sanctuary. The Mahanadi flows through the states of Chhattisgarh, Orissa, and Jharkhand.