With Pulmonary Hypertension, the Lung's Capillary Walls Become Thicker to Compensate

With pulmonary hypertension, the lung's capillary walls become thicker to compensate for the higher pressure. What does Fick's law suggest will happen to CO₂ concentrations?

A) CO₂ levels in the tissues will decrease.
B) CO₂ levels in the blood will remain the same.
C) CO₂ in the alveoli will increase.
D) CO₂ levels in the blood will increase.
E) CO₂ levels in the cells will decrease.