Three years ago, the average age of a family of $5$ members was $17\, years.$ A baby having been born, the average age of the family is the same today. The present age of the baby is (in $years$)

  • A

    $1$

  • B

    $1 \frac{1}{2}$

  • C

    $2$

  • D

    $3$

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