Which of the Following Situations Comparing Inspired Air to Expired

Which of the following situations comparing inspired air to expired air is false?

A) Oxygen diffuses into the arterial end of capillaries to the tissues and CO₂ diffuses into the tissues of the capillaries due to the differences in partial pressures.
B) Oxygen diffuses into the arterial ends of pulmonary capillaries, and CO₂ diffuses into the alveoli because of differences in partial pressures.
C) The partial pressure of O₂ is reduced in the pulmonary veins due to the mixing of blood drained from the bronchi and bronchial tree.
D) Oxygen diffuses out of the arterial end of capillaries to the tissues and CO₂ diffuses out of the tissues to the capillaries due to the differences in partial pressures.