Two Pistons Push Down on the Fluid Filling Two Cylinders

Multiple Choice

Two pistons push down on the fluid filling two cylinders connected by a narrow hose, as shown in the figure. The area A ₁ is 1 square inch, and the area A ₂ is 10 square inches. A force of 4 pounds is exerted downward on piston 1, as shown. The pressure on A ₂ in psi is

A) 0.25.
B) 0.4.
C) 4.
D) 10.
E) 40.