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
Vasopressor of choice in hypotension produced during sub–arachnoid – 
Select and explain. 
A. Ephedrine, B. Mephenteramine, C. Adrenaline, D. Dopamine
A: Ephedrine
Answer: A: Ephedrine 
Explanation: "Ephedrine, a mixed adrenergic agonist, provides more appropriate therapy".
—Miller