How Many of the Following Help Determine Whether or Not

Multiple Choice

How many of the following help determine whether or not a solution forms?
I.the polarities of the solute and solvent
II.the densities of the solute and solvent
III.the probability of the mixed state (of the solution)
IV.the energies needed for the solution formation to occur
V.the state of matter of the solute (solid,liquid,gas)

A) 1
B) 2
C) 3
D) 4
E) 5