This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fluid and electrolytes, Subject name: Medicine
Treatment of Acute Hyperkalemia 
Select and explain. 
A. Ca gluconate given, B. Insulin & Glucose reduces hyperkalemia within 4 hrs, C. Dialysis not useful, D. Resin shows the response within minutes
A: Ca gluconate given
Answer: A: Ca gluconate given 
Explanation: reference : <a href=" <p>