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