A candle of diameter d is floating on a liquid in a cylindrical container of diameter D (D >> d) as shown in figure. If it is burnin g at the rate of 2 cm/hour then the top of the candle will;
(assume that density of wax is half the density of the liquid)

• 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 at the rate of 1 cm/hour