$1.$ Which of the following phenomenalprocesses: flocculation,coalescence, creaming, or sedimentation, will the following emulsions beSusceptible to:$|$A$.$ An ow emulsion of droplet size approx $4$ um using oil with a density of $0\mathrm{.}78$g$/$cm$^3$ with no emulsifier added.B$.$ The same emulsion as in A but to which an emulsifier has been added.C$.$ A w$/$o emulsion in which the density of the oil phase is $1\mathrm{.}23$ g$/$cm$^3$ and towhich an emulsifier has been added$\mathrm{.}2.$ Which of the following emulsions has the biggest chance of phase separationand why?A$.$ An ow emulsion of droplet size approx $5$ umB. An ow emulsion with a droplet size of $10$ umC. An o$/$w emulsion as in A to which hydroxycellulose $($a thickener$)$ has beenadded