Consider the following statements and select the correct answer using the code given below: 1. Contour bunding and terracing are the measures for water conservation. 2. Rain water management comprises conservation of rain-water and reduction in the run off losses. 3. There is a positive correlation between the average annual rainfall and the variability of rainfall.

• A.  1 and 2 are correct
• B.  1 and 3 are correct
• C.  2 and 3 are correct      
• D.  1, 2 and 3 are correct