A liquid of density 600 kg/m$$^3$$ flowing steadily in a tube of varying cross-section. The cross-section at a point $$A$$ is 1.0 cm$$^2$$ and that at $$B$$ is 20 mm$$^2$$. Both the points $$A$$ and $$B$$ are in same horizontal plane, the speed of the liquid at $$A$$ is 10 cm/s. The difference in pressures at $$A$$ and $$B$$ points is __________ Pa.

A

18

B

144

C

36

D

72