A reduction of $21 \%$ in the price of an item enables a person to buy $3\, Kg$ more for $Rs.\,100.$ The reduced price of the item per $Kg$ is (in $Rs.$)

  • A

    $5.50$

  • B

    $7.50$

  • C

    $10.50$

  • D

    $7.00$

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