As an Undergraduate Research Assistant, Your Duties Involve Measuring Water

As an undergraduate research assistant, your duties involve measuring water potential in experimental soil-plant-atmosphere systems. Assume you make a series of measurements in a system under normal daylight conditions, with stomata open and photosynthesis occurring. Which of the following correctly depicts the trend your measurement data should follow if the cohesion-tension mechanism is operating?

A) ψsoil < ψroots = ψleaves < ψatmosphere
B) ψatmosphere < ψleaves = ψroots < ψsoil
C) ψsoil < ψroots < ψleaves < ψatmosphere
D) ψatmosphere < ψleaves < ψroots < ψsoil