This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: New Born Infants, Subject name: Pediatrics
[{'content': 'Normal value of fetal scalp pH is? \nSelect and explain. \nA. 6.9, B. 7, C. 7.1, D. 7.3', 'role': 'user'}, {'content': 'Answer: D \nExplanation: ANSWER: (D) 7.3REF: COGT 10th ed table 8-7AVERAGE "NORMAL" FETAL SCALP AND CORD ACID-BASE VALUES Before LaborSecond Stage of LaborScalp pH7.377.3CO2 pressure (mm Hg)3843Bicarbonate (mmol/L)2121Base excess (mmol/L)-3-5 Umbilical VeinUmbilical ArteryCord pH7.327.26PO238.917.7PCO237.140Base deficit6.86.7', 'role': 'assistant'}]