Which of These Statements Does NOT Describe the Peripheral Chemoreceptors

Multiple Choice

Which of these statements does NOT describe the peripheral chemoreceptors

A) They are stimulated whenever the arterial PO₂ falls below normal.
B) They are weakly stimulated by a rise in arterial PCO₂.
C) They are stimulated by an increase in arterial H⁺, which plays an important role in acid-base balance.
D) They are located at the bifurcation of the common carotid arteries and in the aortic arch.