$A$ greenish yellow gas reacts with an alkali metal hydroxide to form a halate which can be preferentially used in fire works and safety matches,the gas and halate respectively are

  • A
    $Br_2, KBrO_3$
  • B
    $Cl_2, KClO_3$
  • C
    $I_2, NaIO_3$
  • D
    $Cl_2, NaClO_3$

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