This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: ABG Analysis Simplified, Subject name: Medicine
A patient is experiencing respiratory acidosis due to brain trauma. Which of the following lab values correlates with this acid imbalance? 
Select and explain. 
A. Potassium level of 6.0, B. Potassium level of 2.5, C. Potassium level of 5.0, D. Potassium level of 3.5
A: Potassium level of 6.0
Answer: A: Potassium level of 6.0 
Explanation: Respiratory alkalosis - intracellular shift Na+ K+ PO4 2- inside Respiratory acidosis - shift of Na+ K+ PO4 2- outside Therefore K+ | ans. is (A)