With reference to chemical fertilizers in India, consider the following statements:1. At present, the retail price of chemical fertilizers is marker-driven and not administered by the Government.2. Ammonia, which is an input of urea, is produced form natural gas.3. Sulphur, which is a raw material for phosphoric acid fertilizer, is a by-product of oil refineries.Which of the statements given above is/are correct?

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