This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
A 40 year old male develops excessive hyperventilation. ABG reveals pH- 7.5, PCO2 24 mmHg, PO2 88 mm of Hg. Treatment is : 
Select and explain. 
A. Respiratory alkalosis, B. Metabolic alkalosis, C. Respiratory acidosis, D. Metabolic acidosis
A: Respiratory alkalosis
Answer: A: Respiratory alkalosis 
Explanation: Answer A (Respiratory alkalosis) : There is alkalosis (pH = 7.5) and CO2 is low (alkalosis). Change in CO2 is inkeeping with change in pH and thus the primary cause is respiratory. The acid base disturbance is thus primary respiratory alkalosis.