Which of the following statements about radioactive pollution are correct? 1. It causes genetic changes in the animals. 2. It causes disbalance among different minerals in the soil. 3. It hinders blood circulation. 4. It causes cancers. Select the correct answer from the codes given below: Codes:

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