This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Medicine
the blood examination of a patient with head injury reveals Ph=7.2, pco3=65mmhg,hco3= 30 meq/l? 
Select and explain. 
A. respiratory acidosis, B. respiratory alkalosis, C. metabolic acidosis, D. metabolic alkalosis
A: respiratory acidosis
Answer: A: respiratory acidosis 
Explanation: respiratory acidosis ref : harrisons 21st ed