Which of the following mixture types canNOT be filtered to remove solutes?

Acolloids only

Bsuspensions only

Csuspensions and colloids

Dsuspensions and solutions

Why do colloids exhibit Brownian motion? *

Acoagulation of particles of the dispersed phase

Berratic flashes of light

Cmolecules of the dispersion medium colliding with dispered phase particles

DThere is no Brownian motion in colloids.