Which of the Following Statements Is FALSE

Which of the following statements is FALSE?

A) Decreasing levels of oxygen in the blood are detected by chemoreceptors in the brainstem.
B) Breathing is controlled by both voluntary and involuntary mechanisms.
C) Chemoreceptors involved in the homeostatic control of breathing are located in the brainstem and the carotid and aortic bodies.
D) Stronger or more frequent contraction of respiratory muscles helps to remove excess CO₂ from the blood.
E) As an organism's activity level increases, the level of CO₂ in the blood will increase and stimulate faster or stronger breathing.