Answer
a. He might be suffering from secondary polycythemia, which can be caused at high altitude due to low air pressure. To compensate the lack of oxygen, our body starts producing more RBCs, which is the reason why his erythrocyte count was higher than normal.
b. His RBC count will return to normal after sometime when he starts living in lower altitude regions with higher oxygen in air.
Work Step by Step
Same as above.
