Long-Distance Transport in Phloem Requires Which of the Following Processes

Multiple Choice

Long-distance transport in phloem requires which of the following processes?
I. a positive water potential
II. active transport through parenchyma cells
III. cohesion between water molecules
IV. evaporation of water molecules

A) I and II only
B) II and III only
C) I, II, and III only
D) I, II, III, and IV