Which of the Following Statements About Ideal Solutions Are True

Multiple Choice

Which of the following statements about ideal solutions are true?
I.Entropy effects are important for the formation of ideal solutions.
II.The heat of solution is zero.
III.The vapor pressure varies linearly with the composition.
IV.The forces between like kinds of molecules are (almost) equal to the forces between unlike kinds of molecules.

A) I,II,IV
B) I,III,IV
C) II,III,IV
D) I,II,III
E) I,II,III,IV