A force of $19.6\, N$ when applied parallel to the surface just moves a body of mass $10 \,kg$ kept on a horizontal surface. If a $5\, kg$ mass is kept on the first mass, the force applied parallel to the surface to just move the combined body is........ $N.$ 

  • A

    $29.4$

  • B

    $39.2$

  • C

    $18.6$

  • D

    $42.6$

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