When trying to stimulate breathing, it is better to give a mixture of carbon dioxide and oxygen than only oxygen because
A. carbon dioxide and oxygen together exert a greater pressure than an equal amount of oxygen.
B. oxygen causes lactic acid buildup, and the change in pH prevents breathing.
C. pure oxygen causes you to breathe too rapidly.
D. oxygen alone could lead to spontaneous human combustion.
E. carbon dioxide buildup in the blood stimulates the respiratory center in the brain.
Answer: E
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