The average salary of workers in $AMS$ careers is $Rs.\, 2,000$ , the average salary of faculty being $Rs. \,4,000$ and the management trainees being $Rs. \,$ $1,250 .$ The total number of workers could be

  • A

    $450$

  • B

    $300$

  • C

    $110$

  • D

    $500$

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