Which of the statements given below is/are correct? Permanent hardness of water is due to the presence of soluble: 1. chloride of calcium 2. bicarbonate of calcium 3. sulphate of magnesium 4. bicarbonate of magnesium select the correct answer using the code given below:

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