Which of the following is not the least convincing in the imbibtional theory of ascent of sap

Options

A. The imbibitional force is very high from 100-1000 atm
B. The imbibitional force can raise the water to a height of 200'-400' .i.e. the tallest tree
C. The movement of water is along the walls of the xylem vessels and not through the lumen (cavity) of the vessels
D. The movement of water, no doubt is slow, but to some extent can keep pace with tranpiration

Answer

C