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: Pharmacology
A 45 year old man comes to emergency with dizziness. He had supraventricular beats. He is on aspirin, atenolol and quinine. EKG Reveals Torsades De Pointes. He should be managed by: 
Select and explain. 
A. Digoxin, B. Calcium, C. Magnesium, D. Atropine
C: Magnesium
Answer: C: Magnesium 
Explanation: Atropin