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: Anaesthesia
[{'content': 'A 28 year old G3P2 parturient is undergoing general anaesthesia for emergency cesarean section due to uterine rupture. All these findings would suggest an amniotic fluid embolism pH except. \nSelect and explain. \nA. Increased maternal pH, B. Decreased EtCO2, C. Bleeding diathesis, D. Upsloping EtCO2  tracing', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Amniotic fluid embolism-cardinal signs\n\nBranchospasm\nHypoxemia\nShock\nMaternal acidosis\nCoagulopathy (DIC)\nAltered mental status', 'role': 'assistant'}]