7.A liquid-liquid solution is called an ideal solution if (I)it obeys PV = nRT. (II)it obeys Raoult’s law. (III)solute-solute, solvent-solvent, and solute-solvent interactions are very similar. (IV)solute-solute, solvent, and solute-solvent interactions are quite different. (A)I, II, III (B)I, II, IV (C)II, III (D)II, IV (E)I, II, III