55. Which of the following statements about gas exchange is FALSE?
(A) Breathing control centers are located in parts of the brain called the cerebellum and medulla oblongata.
(B) The control center regulates breathing rate in response to changes in the CO2 level of the blood.
(C) Gills are unsuitable for animals living on land because the large surface area of gills would allow dehydration of theanimal.
(D) Unlike the tracheal system of insects, vertebrate lungs are restricted to one location in the body.
(E) Medullary breathing centers directly sense and respond to blood pH and CO2 concentration.