The average salary, per head, of all the workers of an institution is $Rs.\, 60 .$ The average salary of $12$ officers is $Rs.\, 400$; the average salary, per head, of the rest is $Rs.\,56.$ The total number of workers in the institution is

  • A

    $1020$

  • B

    $1032$

  • C

    $1030$

  • D

    $1035$

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