Refer to the Figure Below

Refer to the figure below. This figure shows the interaction between bulk flow movement of materials in the phloem and the xylem.Which statement correctly identifies the locations where the water potential would be lowest (most negative) in each system?

A) Upper end of xylem, upper end of phloem
B) Lower end of xylem, lower end of phloem
C) Upper end of xylem, lower end of phloem
D) Upper end of xylem vessels, lower end of phloem sieve tubes
E) Lower end of xylem vessels, upper end of phloem sieve tubes