Pamela observe the following a beam of light passes through in Set-up A but not in set-ups B and C; Set-up B is homogenous; Set-up C ilhas particles settled at the bottom.
What conclusion can she make?

A. Set-up A is a solution while set-ups B and C are not.

B. Set-ups A, B, and C are mixtures of the same components.

C.Set-up A is a colloid,set-up B is a solution, and set-up C is a suspension.

D. set-up A is a suspension while set-ups B and C are not​.​