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': "A newly posted junior doctor had difficulty in finding out base deficit/excess for blood in a given patient. An experienced senior resident gave him advice to find' out quick method to determine acid-base composition of blood based on pCO2. Which of the following method did the suggest ? \nSelect and explain. \nA. Redford nomogram, B. DuBio's nomogram, C. Goldman Constant, D. Siggaard-Anderson nomogram", 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]