This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Physiology
[{'content': 'Uncompensated metabolic acidosis shows \nSelect and explain. \nA. Increased pH with increased HCO3-, B. Increased pH with decreased HCO3-, C. Decreased pH with increased HCO3-, D. Decreased pH with Decreased HCO3-', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Metabolic acidosis is a disorder that occurs when the body produces excessive amounts of acid, such as ketoacids or lactic acid; the kidneys are unable to remove enough acid produced from normal metabolism; or the body loses too much bicarbonate ion (HCO - Ref: guyton and hall textbook of medical physiology 12 edition', 'role': 'assistant'}]