Which of the following is/are tributary/tributaries of Brahmaputra?1.Dibang2.Kameng3.LohitSelect the correct answer using the code given below

1. A

   1 only

   Dibang only. Dibang is a left-bank Brahmaputra tributary in Arunachal, but Kameng and Lohit also join the same system. 1 alone is incomplete.

2. B

   2 and 3 only

   2 and 3 only. Kameng and Lohit are Brahmaputra tributaries, yet omitting Dibang is wrong. This letter is not the key.

3. C

   1 and 3 only

   1 and 3 only. Dibang and Lohit are correct; Kameng (Jia Bharali) is also a north-bank tributary in Assam/Arunachal. Dropping 2 is not the key.

4. D

   1, 2 and 3

   1, 2 and 3. Dibang, Kameng and Lohit are all tributaries of the Brahmaputra in the eastern Himalayan basin. That stored letter is the official key.

Summary. Official key is (d) 1, 2 and 3. Dibang, Lohit and Kameng all feed the Brahmaputra. Honour the stored letter (d).