A force-time graph for a linear motion is shown in figure where the segments are circular. The linear momentum gained between zero and $8$ second is

38-4

  • A

    $ - 2\pi \,newton \times second$

  • B

    $Zero\;newton \times second$

  • C

    $ + 4\pi \,newton \times second$

  • D

    $ - 6\pi \,newton \times second$

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