Suppose the law of gravitational attraction suddenly changes and becomes an inverse cube law i.e. $F \propto {1\over r^3}$, but still remaining a central force. Then

  • A

    Keplers law of areas still holds

  • B

    Keplers law of period still holds

  • C

    Keplers law of areas and period still hold

  • D

    Neither the law of areas, nor the law of period still holds

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