Which example below describes a system that is NOT able to maintain homeostasis?

• A. A person who is running breathes more rapidly in response to changing in O₂ and CO₂ levels.
• B. A person with diabetes will experience large spikes and crashes of blood glucose without proper monitoring. 
• C. A person moving from the cold to inside a warm house, but their body temperature does not change.
• D. When fluid levels in the body are high, the kidneys will remove more water from the blood.