Consider the following statements:1. Caffeine,a constituent of tea and coffee is a diuretic.2. Citric acid is used in soft drinks.3. Ascorbic acid is essential for the formation of bones and teeth.4. Citric acid is a good substitution for ascorbic acid in our nutrition.which of the statements given above are correct ?

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