Which of the statements given below is/are correct? 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 only
• C. 2 and 4
• D. 1, 2 and 3