Which of the following statements about phloem unloading at sinks is not consistent with our current understanding?

A) Active and passive transport play a role.
B) The mechanisms of sucrose movement and the membrane proteins involved vary among different plant species.
C) Regardless of the type of sink, the conversion of sucrose to storage compounds, such as starch, is a major part of the process.
D) Water moves by osmosis from phloem to xylem.
E) The mechanisms of sucrose movement and the membrane proteins involved vary among different sinks within a plant.