The average age of $20$ boys in the class is $15.6\, years.$ Five new boys join and the new average becomes $15.56\, years.$ What is the average age of the five new boys? (in $years$)

  • A

    $15.5$

  • B

    $15.4$

  • C

    $15.25$

  • D

    $15.3$

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