Consider the following statements (I-IV) about organic farming.
I. Utilises genetically modified crops like Bf cotton.
II. Uses only naturally produced inputs like compost.
III. Does not use pesticides and urea.
IV. Produces vegetables rich in vitamins and minerals.
Which of the above statements are correct?
(a) II, III and IV
(b) III and IV
(c) II and III
(d) I and II