Which of the following groups of forces could be in equibrium

  • A

    $3\, N, 4\, N, 5 \,N$

  • B

    $4\,N, 5 \,N, 10 \,N$

  • C

    $30\,N, 40 \,N, 80 \,N$

  • D

    $1\,N, 3\, N, 5\, N$

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