$3 \,years$ ago the average age of a family of $5 \,members$ was $17 \,years,$ with the birth of a new baby, the average age of six members remains the same even today. Find the age of the new baby in $year$.

  • A

    $2$

  • B

    $3$

  • C

    $5$

  • D

    $7$

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