The colloidal solution used to treat stomach disorders is

Given below are two statements: one is labelled as Assertion $(A)$ and the other is labelled as Reason $(R)$.
Assertion $(A)$: Dissolved substances can be removed from a colloidal solution by diffusion through a parchment paper.
Reason $(R)$: Particles in a true solution cannot pass through parchment paper but the colloidal particles can pass through the parchment paper.
In the light of the above statements,choose the correct answer from the options given below.

Which of the following statements is $NOT$ true about lyophilic colloids?

What type of colloid is milk?

Fog is an example of which type of colloid?

In emulsions,the dispersion medium and dispersed phase are