Which of the following is the correct sequence of events in the origin of life ?

$I.$ Formation of protobionts

$II.$ Synthesis of organic monomers

$III.$ Synthesis of organic polymers

$IV.$ Formation of $DNA$ ­based genetic systems

  • [NEET 2016]
  • A

    $I, II, III, IV$

  • B

    $I, III, II, IV$

  • C

    $II, III, I, IV$

  • D

    $II, III, IV, I$

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