Increased carbon dioxide in the blood increases respiration (breathing) rate. Which of these statements would apply to this mechanism?

A) This is a rare example of a positive-feedback system in the body, because increased carbon dioxide increases respiration rate.
B) This is positive feedback, because an increased respiration rate increases oxygen in the blood.
C) This is negative feedback because increased respiration rate decreases carbon dioxide in the blood.
D) This is negative feedback because a deviation from normal is enhanced and made larger.
E) This is negative feedback because increased respiration rate decreases carbon dioxide in the blood and this is negative feedback because a deviation from normal is enhanced and made larger apply.