The opening near the bottom of the vessel shown in the figure has an area A. A disc is held against the opening to keep the liquid from running out. Let F₁ be the net force
on the disc applied by liquid and air in this case. Now the disc is moved away from the opening by a short distance. The liquid comes out and strikes the disc inelastically. Let F₂ be the force exerted by the liquid in this condition. Then F₁/F₂ is

• A

  1

• B

  $\frac{1}{2}$

• C

  $\frac{2}{1}$

• D

  $\frac{1}{4}$