A U-Tube Has Dissimilar Arms, One Having Twice the Diameter

Multiple Choice

A U-tube has dissimilar arms, one having twice the diameter of the other.It contains an incompressible fluid and is fitted with a sliding piston in each arm, with each piston in contact with the fluid.When an applied force does work W in pushing the piston in the narrow arm down, the fluid does work __________ on the piston in the wide arm.

A) W
B) 2W
C) W/2
D) 4W
E) W/4