Which among the following methods is used to prepare Grignard reagent?

  • A
    Action of magnesium metal on alkyl halide in presence of dry ether
  • B
    Action of magnesium powder on alkyl halide in aqueous medium
  • C
    Action of magnesium hydroxide on alkyl halide
  • D
    Action of $MgCl_2$ on alkyl halide in presence of dry ether

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