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: Physiology
[{'content': 'Fasting blood sugar in normal individuals is:September 2007 \nSelect and explain. \nA. 80-100 mg/100 ml, B. 100 -120 mg/100 ml, C. 120 -140 mg/100 ml, D. 140-160 mg/100 ml', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A: 80-100 mg/100 mlFBS in early morning is normally 80-90 mg/100 ml and 110 mg/100m1 is considered to be the upper limit of normal.', 'role': 'assistant'}]