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
[{'content': 'Adrenal insufficiency causes: March 2011 \nSelect and explain. \nA. A rise in plasma sodium/potassium ratio, B. Low blood pressure, C. Increase breakdown of protein, D. All', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B: Low blood pressure Features of an acute adrenal crisis include circulatory shock with severe hypotension, hyponatremia, hyperkalemia and, in some instances hypoglycemia and hypercalcemia.', 'role': 'assistant'}]