This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Electrolyte Imbalance, Subject name: Medicine
Pregnancy leads to development of? 
Select and explain. 
A. Respiratory alkalosis, B. Respiratory acidosis, C. Metabolic acidosis, D. Metabolic alkalosis
A: Respiratory alkalosis
Answer: A: Respiratory alkalosis 
Explanation: Pregnancy- | RR- CO2wash out resulting in Respiratory alkalosis Respiratory acidosis- due to CO2retention