A gas pressure ( 150,000Pa ) (gage) is applied to one leg of a U-tube manometer, which contains a fluid with density of ( 2000kg/m³ ). The other leg is open to the atmosphere. What is the height difference between the fluid levels in the two legs of the manometer?

a) ( 0.075m )
b) ( 0.15m )
c) ( 0.3m )
d) ( 0.6m )