A glass bottle of volume 100 cc at 0°C is filled with paraffin at 20°C. If the density of paraffin at 0°C is 0.8 g/cc, $\gamma$ paraffin = 10 x 10^-4 /°C and the coefficient of linear
expansion of glass is 10 x 10^-6 /°C, the mass of paraffin is 

• A

  78.45 g

• B

  78 .48 g

• C

  81.6 g

• D

  80 g