Arrange the following countries in the descending order of their wheat production and select the correct answer: from the codes given below: 1. China 2. India 3. Russia 4. U.S.A.

• A.  1, 2.3,4,                      
• B.  1.2,4,3
• C.  2, 3. 4, 1                     
• D.  4, 1, 2, 3