Which Feature Does Not Characterize the Salt Glands of Marine

Which feature does not characterize the salt glands of marine birds?

A) They consist of secretory tubules served by arterioles and venules.
B) Their secretions drain into the nasal cavity.
C) Chloride ions move from the extracellular fluid into tubule cells via osmosis.
D) Chloride ions move from the tubule cell into tubule fluid, and sodium ions and water follow.
E) They are in depressions of the skull.