According to Oparin's theory,what did the primitive atmosphere of the Earth contain?

  • A
    $NH_3, N_2, H_2O$
  • B
    $NH_3, N_2, HCN, H_2O$
  • C
    $NH_3, CH_4, H_2, H_2O$
  • D
    $CH_4, HCN, H_2O$

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