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
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. 
Select and explain. 
A. Increased maternal pH, B. Decreased EtCO2, C. Bleeding diathesis, D. Upsloping EtCO2  tracing
A: Increased maternal pH
Answer: A: Increased maternal pH 
Explanation: Amniotic fluid embolism-cardinal signs

Branchospasm
Hypoxemia
Shock
Maternal acidosis
Coagulopathy (DIC)
Altered mental status