Tyndall effect is a phenomenon of

Question

$\begin{array}{1 1} \text{A) the size of the colloidal particle is relatively smaller than the solute particle of a true solution} \\ \text{ B) the size of the colloidal particle is relatively greater than the solute particle of a true solution} \\ \text{ C) the size of the colloidal particle is equal to the solute particle of a true solution} \\ \text{ D) the size of the colloidal particle is negligibly small.} \end{array}$