Which of the following is/are tributary/tributaries of Brahmaputra? 1. Dibang 2. Kameng 3. Lohit Select the correct answer using the code given below.

All three rivers are major tributaries of the Brahmaputra: Dibang and Lohit are significant left-bank tributaries that join the river in the Sadiya region, while Kameng is a major right-bank tributary flowing through Arunachal Pradesh. Option (c) is the most tempting error if a candidate overlooks right-bank tributaries or mistakenly associates Kameng with a different drainage basin. The core concept being tested is the detailed mapping of the Himalayan drainage system, specifically the identification of the Brahmaputra’s primary left and right-bank tributaries.