Question
A small piston with an area equal to A1, and a large piston with an area equal to A2 are at either end of an U-shaped tube full of fluid. An object is placed on the left side as shown in the image below, increasing the pressure on the fluid directly beneath it by 2 Pa.

What effect does this have on the pressure on the fluid on the right side?

The pressure in the fluid on the right side increases by 2 Pa because the change in pressure is transmitted equally throughout the fluid.

The pressure in the fluid on the right side increases by 2 Pa because the change in pressure is transmitted equally throughout the fluid.

The pressure in the fluid on the right side increases, but by more than 20 Pa. The left side is more narrow, so it experiences a smaller pressure change than the right side.

The pressure in the fluid on the right side increases, but by less than 20 Pa. The left side is affected by the pressure change more than the right side.