The volume of a colloidal particle, $V_C$ as compared to the volume of a solute particle in a true solution $\mathrm{V}_{\mathrm{s}}$, could be

• A

  $\frac{V_{\mathrm{C}}}{\mathrm{V}_{\mathrm{S}}} \simeq 1$
• B

  $\frac{V_c}{V_{\mathrm{s}}} \simeq 10^{23}$
• C

  $\frac{V_{\mathrm{c}}}{\mathrm{V}_{\mathrm{S}}} \simeq 10^{-3}$
• Correct answer
  D

  $\frac{V_c}{V_s} \simeq 10^3$

Hence, the correct answer is option: 'D'.