At 63,000 feet, the total barometric pressure is 47 mmHg. This is significant to the aviator because (mark all that are true statements)
A) The oxygen pressure in the lungs is lower than the oxygen pressure in the tissues.
B) The pilot is at risk of hyperventilation.
C) The risk of decompression sickness is increased.
D) The oxygen-hemoglobin dissociation curve shifts to the right.
