Consider the following statements: [NDA/NA 2014-4] 1. Crystallization is a form of mechanical weathering. 2. Hydration causes granular disintegration. 3. Frost action is synonymous with freeze-thaw action. Which of the statements given above are correct?

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