All of the Following Are Examples of Maintaining Homeostasis Except

All of the following are examples of maintaining homeostasis except:

A) A sensor detects CO₂ levels in the blood and triggers an increase or decrease in the rate of breathing.
B) A drop in body temperature triggers shivering which generates heat; an increase in body temperature triggers sweating which releases heat.
C) Feelings of hunger and then fullness affect the length of time between meals and quantity of food you eat,keeping your weight near a "set point."
D) A cancerous tumor continues to grow larger and then metastasizes,spreading to new areas of the body.
E) By opening and closing pores in their leaves,plants continuously exchange oxygen and carbon dioxide with the atmosphere.