Which Statement Is True

Which statement is true?

A) Breathing rate and depth are completely under voluntary control.
B) A person can commit suicide by holding his or her breath.
C) The contraction of the diaphragm and muscle of the rib cage are under the control of areas of the brain.
D) There are chemoreceptors in the brain that monitor carbon dioxide content in the blood and control breathing.
E) The contraction of the diaphragm and muscle of the rib cage are under the control of areas of the brain, and there are chemo-receptors in the brain that monitor carbon dioxide content in the blood and control breathing.