A liquid flows in the tube from left to right as shown in fig. (3). A₁ and A₂, are the cross-sections of the
 

portions of the tube as shown. Then the ratio of speeds ${\mathrm{v}}_1/{\mathrm{v}}_2 \mathrm{willbe}$
 

• A

  ${\mathrm{A}}_1/{\mathrm{A}}_2$

• B

  ${\mathrm{A}}_2/{\mathrm{A}}_1$

• C

  $\sqrt{{\mathrm{A}}_2}/\sqrt{{\mathrm{A}}_1}$

• D

  ${\mathrm{A}}_1/\sqrt{{\mathrm{A}}_2}$