Which of the following statement$(s)$ is are correct?

  • A

    If the resultant of three forces is zero, then the vectors must be equal magnitude

  • B

    If the resultant of four non-zero forces is zero, then the vectors must be coplanar

  • C

    If the resultant of three non-zero vectors, is zero, then the vectors must be coplanar

  • D

    All of these

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