Consider the following pairs: Tributary River Main River 1. Chambal Narmada 2. Sone Yamuna 3. Manas Brahmaputra Which of the pairs given above is/are correctly matched?

• A.  1, 2 and 3                    
• B.  1 and 2 only
• C.  2 and 3 only    
• D.  3 only