Which of the following pairs are correctly matched'? (River) (Countries) 1. Niger Guinea 2. Orange S. Africa 3. Karai Egypt 4. Nile Mali Select the correct answer using the codes given below:

• A.  1 and 2           
• B.  1 and 3
• C.  1, 3 and 4        
• D.  2, 3 and 4