A wire has a non-uniform cross-section as shown in figure. A steady current flows through it. The drift speed of electrons at points P and Q is ${\mathrm{v}}_{\mathrm{P}}\mathrm{and}{\mathrm{v}}_{\mathrm{Q}}$. Then

• A

  v_P = v_Q

• B

  v_P < v_Q

• C

  v_P > v_Q

• D

  data insufficient