A candle of diameter $d$ is floating on a liquid in a cylindrical container of diameter $D\left( {D >  > d} \right)$ as shown in figure. If it is burning at the rate of $2\  cm/hour$ then the top of the candle will

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  • A

    Remain at the same height

  • B

    Fall at the rate of $1$  $cm/hour$

  • C

    Fall at the rate of $2$  $cm/hour$

  • D

    Go up the rate of $1$  $cm/hour$

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