Consider the following statements $(I-IV)$ regarding organic farming:
$I.$ Use of genetically modified crops like $Bt$ cotton.
$II.$ Input of naturally produced compost.
$III.$ No use of urea and pesticides.
$IV.$ Production of vitamin and mineral-rich vegetables.
Which of the above statements are correct?

• A
  $II, III$ and $IV$
• B
  $III$ and $IV$
• C
  $II$ and $III$
• D
  $I$ and $II$