Pressure in a Fluid : the Two Water Reservoirs Shown

Multiple Choice

Pressure in a fluid : The two water reservoirs shown in the figure are open to the atmosphere, and the water has density 1000 kg/m³. The manometer contains incompressible oil with a density of 820 kg/m³. What is the difference in elevation h if the manometer reading m is 25.0 cm?

A) 0.045 m
B) 0.025 m
C) 0.065 m
D) 0.115 m
E) 0.205 m