The average age of a husband and wife, who were married $7 \,years$ ago, was $25\, years$ at the time of their marriage, Now, the average age of the family, including husband, wife and a child, born during the interval, is $22\, years.$ What is the present age of the child in $year$ ?

  • A

    $4$

  • B

    $2$

  • C

    $3$

  • D

    $5$

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