Which statement accurately describes the permeability to water of the cell membrane and the capillary wall?
A. Both the plasma membrane and the capillary wall are permeable to water.
B. The plasma membrane is permeable to water, but the capillary wall is not.
C. The plasma membrane is not permeable to water, but the capillary wall is.
D. Neither the plasma membrane nor the capillary wall is permeable to water.