A body of mass  $M$  is dropped from a height  $h$  on a sand floor. If the body penetrates $x\,\,cm$  into the sand, the average resistance offered by the sand of the body is

  • A

    $Mg\left( {\frac{h}{x}} \right)$

  • B

    $Mg\left( {1\,+\,\frac{h}{x}} \right)$

  • C

    $Mgh\,+\,Mgx$

  • D

    $Mg\left( {1\,-\,\frac{h}{x}} \right)$

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