With reference to chemical fertilizers in India, consider the following statements:

1.At present, the retail price of chemical fertilizers is market-driven and not administered by the Government.

2.Ammonia, which is an input of urea, is produced from 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?