Which one will dissolve the fastest

A. Powdered sugar or granular sugar
B. Sugar in ice water or sugar in boiling water
C. Kool-Aid powder that is stirred after mixing it into water or
Kool-Aid powder that is left at the bottom of picture with water.

A. Powdered sugar (greater surface area)
B. Sugar in warm water (more soluble in warm water)
C. Stirred Kool-Aid powder (greater surface area).

A, powdered sugar--> larger surface area
B, boiling water-->more collision between particles
C, stirred-->more interactions, spread out--> more surface area