61. in the atmosphere, the partial pressure of oxygen is 0.21 atmosphere; of carbon dioxide, 0.0003. Which of the following statements is not true? (A)The partial pressure of oxygen in lung capillary is greater than 0.21. (B) In the pulmonary vein, the partial pressure of oxygen is greater than in the inferior vena cava. , (C) In the pulmonary artery, the partial pressure of carbon dioxide is greater than 0.0003. (D) The partial pressure of oxygen in muscle capillaries is less than 0.21. (E) In the renal artery, the partial pressure of oxygen is greater than in the renal vein.